cockamamie (adj.) Look up cockamamie at Dictionary.com
American English slang word attested by 1946, popularized c. 1960, but said to be New York City children's slang from mid-1920s; perhaps an alteration of decalcomania (see decal).
cockatoo (n.) Look up cockatoo at Dictionary.com
1610s, from Dutch kaketoe, from Malay (Austronesian) kakatua, possibly echoic, or from kakak "elder brother or sister" + tua "old." Also cockatiel (1880), from Dutch diminutive kaketielje (1850), which is perhaps influenced by Portuguese. Spelling influenced by cock (n.1).
cockatrice (n.) Look up cockatrice at Dictionary.com
late 14c., from Old French cocatriz, altered (by influence of coq) from Late Latin *calcatrix, from Latin calcare "to tread" (from calx (1) "heel;" see calcaneus), as translation of Greek ikhneumon, literally "tracker, tracer."

In classical writings, an Egyptian animal of some sort, the mortal enemy of the crocodile, which it tracks down and kills. This vague sense became hopelessly confused in the Christian West, and in England the word ended up applied to the equivalent of the basilisk. A serpent hatched from a cock's egg, it was fabled to kill by its glance and could be slain only by tricking it into seeing its own reflection. Belief in them persisted even among the educated because the word was used in the KJV several times to translate a Hebrew word for "serpent." In heraldry, a beast half cock, half serpent.
cockchafer (n.) Look up cockchafer at Dictionary.com
from cock (n.1), in reference to its size, + chafer.
cockerel (n.) Look up cockerel at Dictionary.com
"young cock," mid-15c. (late 12c. as a surname), apparently a diminutive of cock (n.1). Despite the form, no evidence that it is from French.
cockeyed (adj.) Look up cockeyed at Dictionary.com
1821, "squint-eyed," perhaps from cock (v.) in some sense + eye (n.). Figurative sense of "absurd, askew, crazy" is from 1896; that of "drunk" is attested from 1926.
cockle (n.1) Look up cockle at Dictionary.com
type of mollusk, early 14c., from Old French coquille (13c.) "scallop, scallop shell; mother of pearl; a kind of hat," altered (by influence of coque "shell") from Vulgar Latin *conchilia, from Latin conchylium "mussel, shellfish," from Greek konkhylion "little shellfish," from konkhe "mussel, conch." Phrase cockles of the heart (1660s) is perhaps from similar shape, or from Latin corculum, diminutive of cor "heart."
cockle (n.2) Look up cockle at Dictionary.com
flowering weed that grows in wheat fields, Old English coccel "darnel," used in Middle English to translate the Bible word now usually given as tares (see tare (n.1)). It is in no other Germanic language and may be from a diminutive of Latin coccus "grain, berry."
cockney (n.) Look up cockney at Dictionary.com
c. 1600, usually said to be from rare Middle English cokenei, cokeney "spoiled child, milksop" (late 14c.), originally cokene-ey "cock's egg" (mid-14c.). Most likely disentangling of the etymology is to start from Old English cocena "cock's egg" -- genitive plural of coc "cock" + æg "egg" -- medieval term for "runt of a clutch," extended derisively c. 1520s to "town dweller," gradually narrowing thereafter to residents of a particular neighborhood in the East End of London. Liberman, however, disagrees:
[I]n all likelihood, not the etymon of ME cokeney 'milksop, simpleton; effeminate man; Londoner,' which is rather a reshaping of [Old French] acoquiné 'spoiled' (participle). However, this derivation poses some phonetic problems that have not been resolved.
The accent so called from 1890, but the speech peculiarities were noted from 17c. As an adjective in this sense, from 1630s.
cockpit (n.) Look up cockpit at Dictionary.com
1580s, "a pit for fighting cocks," from cock (n.1) + pit (n.1). Used in nautical sense (1706) for midshipmen's compartment below decks; transferred to airplanes (1914) and to cars (1930s).
cockroach (n.) Look up cockroach at Dictionary.com
1620s, folk etymology (as if from cock + roach) of Spanish cucaracha "chafer, beetle," from cuca "kind of caterpillar." Folk etymology also holds that the first element is from caca "excrement."
A certaine India Bug, called by the Spaniards a Cacarootch, the which creeping into Chests they eat and defile with their ill-sented dung [Capt. John Smith, "Virginia," 1624].
cockscomb (n.) Look up cockscomb at Dictionary.com
c. 1400, "comb or crest of a cock," from possessive of cock (n.1) + comb (n.). Meaning "cap worn by a professional fool" is from 1560s; hence "conceited fool" (1560s), a sense passing into the derivative coxcomb. As a plant name, from 1570s.
cocksucker (n.) Look up cocksucker at Dictionary.com
1890s, "one who does fellatio" (especially a male homosexual); 1920s as "contemptible person," American English, from cock (n.1) in phallic sense + sucker (n.). Used curiously for aggressively obnoxious men; the ancients would have recoiled at this failure to appreciate the difference between passive and active roles; Catullus, writing of his boss, employs the useful Latin insult irrumator, which means "someone who forces others to give him oral sex," hence "one who treats people with contempt."
cocksure (adj.) Look up cocksure at Dictionary.com
1520s, "certain," from cock (n.1) + sure (adj.). Probably "as assured as a cock." "The word was originally perfectly dignified, and habitually used in the most solemn connexions" [OED]. D.H. Lawrence playfully coined hensure as a female version (1929).
cocktail (n.) Look up cocktail at Dictionary.com
first attested 1806; H.L. Mencken lists seven versions of its origin, perhaps the most durable traces it to French coquetier "egg-cup" (15c.; in English cocktay). In New Orleans, c. 1795, Antoine Amédée Peychaud, an apothecary (and inventor of Peychaud bitters) held Masonic social gatherings at his pharmacy, where he mixed brandy toddies with his own bitters and served them in an egg-cup. On this theory, the drink took the name of the cup. Used from 1920s of any mix of substances (fruit, Molotov). Cocktail party first attested 1928.
cocky (adj.) Look up cocky at Dictionary.com
"arrogantly pert," 1768; originally "lecherous" (1540s); from cock (n.1) + -y (2). Related: Cockiness.
coco (n.) Look up coco at Dictionary.com
"palm tree," mid-16c., from Spanish and Portuguese coco "grinning face," on resemblance of the three holes at the base of the shell to a human face. The earlier word for it was the Latinized form cocus, which sometimes was Englished as cocos.
cocoa (n.) Look up cocoa at Dictionary.com
powder from cacao seeds, 1707, corruption (by influence of coco) of cacao. The printing of Johnson's dictionary ran together the entries for coco and cocoa, fostering a confusion that never has been undone.
coconut (n.) Look up coconut at Dictionary.com
1610s, from coco + nut. Meaning "the head" is slang from 1834.
cocoon (v.) Look up cocoon at Dictionary.com
1986, "to stay inside and be inactive," from coccoon (n.).
A lady with an enchanting name, Faith Popcorn, has identified a menacing new American behavior that she gives the sweet name of 'cocooning.' It threatens the nation's pursuit of happiness, sometimes called the economy. [George Will, April 1987]
Related: Cocooned; cocooning.
cocoon (n.) Look up cocoon at Dictionary.com
1690s, from Middle French coucon (16c., Modern French cocon), from coque "clam shell, egg shell, nut shell" (7c.), from Old French coque "shell," from Latin coccum "berry," from Greek kokkos "berry, seed" (see cocco-). The sense of "one's interior comfort place" is from 1986. Also see -oon.
cocotte (n.) Look up cocotte at Dictionary.com
type of cooking vessel, 1907, from French cocotte "saucepan" (19c.), a diminutive from cocasse, ultimately from Latin cucama. Sense of "prostitute," 1867, is from French cocotte, originally a child's name for "little hen" (18c.), hence "sweetie, darling."
cod (n.) Look up cod at Dictionary.com
large sea fish, mid-14c. (late 13c. in a surname, Thomas cotfich), of unknown origin; despite similarity of form it has no conclusive connection to the widespread Germanic word for "bag" (represented by Old English codd, preserved in codpiece). Cod-liver oil known since at least 1610s, was recommended medicinally since 1783, but not popular as a remedy until after 1825.
coda (n.) Look up coda at Dictionary.com
"concluding passage in a musical composition," 1753, from Latin cauda "tail of an animal."
coddle (v.) Look up coddle at Dictionary.com
c. 1600, "boil gently," probably from caudle "warm drink for invalids" (c. 1300), from Anglo-French caudel (c. 1300), ultimately from Latin calidium "warm drink, warm wine and water," neuter of calidus "hot," from calere "be warm" (from PIE root *kele- (1) "warm"). Verb meaning "treat tenderly" first recorded 1815 (in Jane Austen's "Emma"). Related: Coddled; coddling.
code (v.) Look up code at Dictionary.com
1815, from code (n.). Specifically in the computer sense from 1947. Related: Coded; coding.
code (n.) Look up code at Dictionary.com
c. 1300, "systematic compilation of laws," from Old French code "system of laws, law-book" (13c.), from Latin codex, earlier caudex "book, book of laws," literally "tree trunk," hence, book made up of wooden tablets covered with wax for writing. Meaning "cipher" (the sense in secret code) is from 1808.
codec (n.) Look up codec at Dictionary.com
by 1970, an abbreviation from compressor-decompressor or coder-decoder, on model of modem.
codefendant (n.) Look up codefendant at Dictionary.com
also co-defendant, 1640s, from co- + defendant.
codeine (n.) Look up codeine at Dictionary.com
alkaloid present in opium, 1838, from French codéine, coined, with chemical suffix -ine (2), from Greek kodeia "poppy head," related to kooz "prison," literally "hollow place;" kodon "bell, mouth of a trumpet;" koilos "hollow," from PIE root *kel- (1) "to cover, conceal, save." Originally codeina; modern form is from 1881.
codependent (adj.) Look up codependent at Dictionary.com
also co-dependent, by 1905, in various senses, from co- + dependent. Modern psycological sense is attested from c. 1983. Related: Codependence, codependency.
codex (n.) Look up codex at Dictionary.com
"manuscript volume (especially an ancient one)," 1845, from Latin codex (see code (n.)).
codger (n.) Look up codger at Dictionary.com
1756, probably a variant of cadger "beggar" (see cadge (v.)), which is of unknown origin.
codicil (n.) Look up codicil at Dictionary.com
early 15c., from Middle French codicille, from Latin codicillus "a short writing, a small writing tablet," diminutive of codex (genitive codicis), see code (n.).
codification (n.) Look up codification at Dictionary.com
1817 (Bentham), noun of action from codify.
codify (v.) Look up codify at Dictionary.com
c. 1800, from code (n.) + -fy. Related: codified; codifying.
codominant (adj.) Look up codominant at Dictionary.com
also co-dominant, 1926, from co- + dominant.
codon (n.) Look up codon at Dictionary.com
1962, from code (n.) + -on.
codpiece (n.) Look up codpiece at Dictionary.com
mid-15c., "a bagged appendage to the front of the breeches; often conspicuous" [OED], from Old English codd "a bag, pouch, husk," in Middle English, "testicles" (cognate with Old Norse koddi "pillow, scrotum") + piece (n.).
codswallop (n.) Look up codswallop at Dictionary.com
said to be from 19c. (but first attested 1963), perhaps from wallop, British slang for "beer," and cod in one of its various senses, perhaps "testicles."
coe (n.) Look up coe at Dictionary.com
"hut built over a mine shaft," 1650s, from some source akin to Dutch kouw, German kaue in the same sense, from West Germanic *kauja-, an early borrowing of Latin cavea "hollow," from cavus "a hollow" (see cave (n.)).
coeducational (adj.) Look up coeducational at Dictionary.com
also co-educational, 1881, from co-education (1852), from co- + education.
coefficient (n.) Look up coefficient at Dictionary.com
also co-efficient, c. 1600, from co- + efficient. Probably influenced by Modern Latin coefficiens, which was used in mathematics in 16c., introduced by French mathematician François Viète (1540-1603). As an adjective from 1660s.
coelacanth (n.) Look up coelacanth at Dictionary.com
1857, from Modern Latin Coelacanthus (genus name, 1839, Agassiz), from Greek koilos "hollow" (from PIE root *kel- (1) "to cover, conceal, save") + akantha "spine" (from PIE root *ak- "be sharp, rise (out) to a point, pierce"). So called from the hollow fin rays supporting the tail. Known only as a fossil, the most recent one from 70 million years ago, until discovered living in the sea off the east coast of South Africa Dec. 22, 1938. The specimen was described by Marjorie Courtney-Latimer, who wrote about it to South African ichthyologist J.L.B. Smith.
I stared and stared, at first in puzzlement. I did not know any fish of our own, or indeed of any seas like that; it looked more like a lizard. And then a bomb seemed to burst in my brain, and beyond that sketch and the paper of the letter, I was looking at a series of fishy creatures that flashed up as on a screen, fishes no longer here, fishes that had lived in dim past ages gone, and of which only fragmentary remains in rock are known. [J.L.B. Smith, "Old Fourlegs: The Story of the Coelacanth," 1956]
coeliac (adj.) Look up coeliac at Dictionary.com
1660s, from Latin coeliacus, from Greek koiliakos "pertaining to the bowels," also "pain in the bowels," from koilia "bowels, abdominal cavity, intestines, tripe" from koilos "hollow," from PIE root *keue- "to swell; vault, hole" (see cumulus).
coelomate (n.) Look up coelomate at Dictionary.com
1883, from Coelomata (1877), from Modern Latin neuter plural of coelomatus, from Greek koilomat- "hollow, cavity," from PIE root *kel- (1) "to cover, conceal, save."
coeno- Look up coeno- at Dictionary.com
word-forming element meaning "common," Latinized from Greek koinos "common, public, shared, general, ordinary," from PIE *kom "beside, near, by, with" (see com-).
coequal (adj.) Look up coequal at Dictionary.com
late 14c.; see co- + equal (adj.).
coerce (v.) Look up coerce at Dictionary.com
mid-15c., cohercen, from Middle French cohercer, from Latin coercere "to control, restrain, shut up together," from com- "together" (see co-) + arcere "to enclose, confine, contain, ward off," from PIE *ark- "to hold, contain, guard" (see arcane). Related: Coerced; coercing. No record of the word between late 15c. and mid-17c.; its reappearance 1650s is perhaps a back-formation from coercion.
coercion (n.) Look up coercion at Dictionary.com
early 15c., from Old French cohercion (Modern French coercion), from Medieval Latin coercionem, from Latin coerctionem, earlier coercitionem, noun of action from past participle stem of coercere (see coerce).