play-list (n.) Look up play-list at Dictionary.com
also playlist, 1975 in the radio station sense, from play (v.) + list (n.).
play-pen (n.) Look up play-pen at Dictionary.com
also playpen, 1931, from play + pen (n.2).
play-time (n.) Look up play-time at Dictionary.com
also playtime, 1660s in the recreational sense, from play (n.) + time (n.).
playbook (n.) Look up playbook at Dictionary.com
also play-book, 1530s, "book of stage plays," from play (n.) + book (n.). Meaning "Book of football plays" recorded from 1965.
playboy (n.) Look up playboy at Dictionary.com
1829, "wealthy bon vivant," from play (v.) + boy. Fem. equivalent playgirl first recorded 1934. As the name of a U.S. based magazine for men, from December 1953.
player (n.) Look up player at Dictionary.com
Old English plegere, agent noun from play (v.). Stage sense is from mid-15c. As a pimp's word for himself (also playa), attested from 1974. Player-piano attested from 1901.
playful (adj.) Look up playful at Dictionary.com
mid-13c., from play (v.) + -ful. Related: Playfully; playfulness.
playground (n.) Look up playground at Dictionary.com
1780, from play (v.) + ground (n.). Old English had plegstow "village sports ground," literally "place for play."
playhouse (n.) Look up playhouse at Dictionary.com
late Old English pleghus; see play (n.) + house (n.).
playmate (n.) Look up playmate at Dictionary.com
1640s, "companion, playfellow," from play (v.) + mate (n.). The sexual sense is from 1954 and the launch of "Playboy" magazine.
plaything (n.) Look up plaything at Dictionary.com
1670s, from play (v.) + thing.
playwright (n.) Look up playwright at Dictionary.com
1680s, from play (n.) + wright.
plaza (n.) Look up plaza at Dictionary.com
1830, from Spanish plaza "square, place," from Vulgar Latin *plattia, from Latin platea "courtyard, broad street" (see place (n.)).
plea (n.) Look up plea at Dictionary.com
early 13c., "lawsuit," from Anglo-French plai (late 12c.), Old French plait "lawsuit, decision, decree" (9c.), from Medieval Latin placitum "lawsuit," in classical Latin, "opinion, decree," literally "that which pleases, thing which is agreed upon," properly neuter past participle of placere (see please). Sense development seems to be from "something pleasant," to "something that pleases both sides," to "something that has been decided." Meaning "a pleading, an agreement in a suit" is attested from late 14c. Plea-bargaining is first attested 1963. Common pleas (early 13c.) originally were legal proceedings over which the Crown did not claim exclusive jurisdiction (as distinct from pleas of the Crown); later "actions brought by one subject against another."
plead (v.) Look up plead at Dictionary.com
mid-13c., "make a plea in court," from Anglo-French pleder, Old French plaidier, "plead at court" (11c.), from Medieval Latin placitare, from Late Latin placitum (see plea). Sense of "request, beg" first recorded late 14c. Related: Pleaded; pleading; pleadingly.
pleading (n.) Look up pleading at Dictionary.com
late 13c., "the carrying on of a suit at court," verbal noun from plead (v.). Meaning "supplication, intercession" is from early 15c.
pleasance (n.) Look up pleasance at Dictionary.com
late 14c., from Old French plaisance "pleasure, delight, enjoyment," from plaisant (see pleasant).
pleasant (adj.) Look up pleasant at Dictionary.com
late 14c. (early 14c. as a surname), from Old French plaisant "pleasant, pleasing, agreeable" (12c.), present participle of plaisir "to please" (see please). Pleasantry has the word's modern French sense of "funny, jocular." Related: Pleasantly.
pleasantry (n.) Look up pleasantry at Dictionary.com
"sprightly humor in conversation," 1650s, from French plaisanterie "joke, jest; joking, jesting," from plaisant (see pleasant). Related: Pleasantries.
please (v.) Look up please at Dictionary.com
early 14c., "to be agreeable," from Old French plaisir "to please, give pleasure to, satisfy" (11c., Modern French plaire, the form of which is perhaps due to analogy of faire), from Latin placere "to be acceptable, be liked, be approved," related to placare "to soothe, quiet" (source of Spanish placer, Italian piacere), possibly from PIE *plak-e- "to be calm," via notion of still water, etc., from root *plak- (1) "to be flat" (see placenta).

Meaning "to delight" in English is from late 14c. Inverted use for "to be pleased" is from c.1500, first in Scottish, and paralleling the evolution of synonymous like (v.). Intransitive sense (do as you please) first recorded c.1500; imperative use (please do this), first recorded 1620s, was probably a shortening of if it please (you) (late 14c.). Related: Pleased; pleasing; pleasingly.

Verbs for "please" supply the stereotype polite word ("Please come in," short for may it please you to ...) in many languages (French, Italian), "But more widespread is the use of the first singular of a verb for 'ask, request' " [Buck, who cites German bitte, Polish proszę, etc.]. Spanish favor is short for hace el favor "do the favor." Danish has in this sense vær saa god, literally "be so good."
pleased (adj.) Look up pleased at Dictionary.com
"satisfied, contented," late 14c., past participle adjective from please (v.).
pleaser (n.) Look up pleaser at Dictionary.com
1520s, agent noun from please.
pleasurable (adj.) Look up pleasurable at Dictionary.com
1570s, from pleasure (n.) + -able. Related: Pleasurability; pleasurably. For sense, compare comfortable.
pleasure (n.) Look up pleasure at Dictionary.com
late 14c., "condition of enjoyment," from Old French plesir, also plaisir "enjoyment, delight, desire, will" (12c.), from noun use of infinitive plaisir (v.) "to please," from Latin placere "to please, give pleasure, be approved" (see please (v.)). Ending altered in English 14c. by influence of words in -ure (measure, etc.). Meaning "sensual enjoyment as the chief object of life" is attested from 1520s.
pleasure (v.) Look up pleasure at Dictionary.com
1530s, "to take pleasure in;" 1550s as "give pleasure to," from pleasure (n.). Sexual sense by 1610s. Related: Pleasured; pleasuring.
pleasure-seeker (n.) Look up pleasure-seeker at Dictionary.com
from pleasure (n.) + agent noun from seek.
pleat (v.) Look up pleat at Dictionary.com
1560s, used as the verb version of plait (n.) and probably representing an alternative pronunciation. Related: Pleated; pleating.
pleat (n.) Look up pleat at Dictionary.com
"a fold," 1580s, variant of plait (n.). With a gap in the printed record 17c.-18c., but probably it was in continuous oral use.
pleather (n.) Look up pleather at Dictionary.com
by 1991, from plastic + leather.
pleb (n.) Look up pleb at Dictionary.com
1856 as a colloquial shortening of plebeian in the ancient Roman sense. West Point sense attested by 1851 (see plebe).
plebe (n.) Look up plebe at Dictionary.com
also pleb, "member of the lowest class at a U.S. military academy," 1833, probably a shortened form of plebeian "one of the lower class," which in Latin also had the short form plebs or plebes.
plebeian (n.) Look up plebeian at Dictionary.com
"member of the lowest class," 1530s, from Latin plebius "person not of noble rank," from adjective meaning "of the common people" (see plebeian (adj.)).
plebeian (adj.) Look up plebeian at Dictionary.com
also plebian, "of or characteristic of the lower class," 1560s in a Roman historical sense, from Latin plebeius "belonging to the plebs," earlier plebes, "the populace, the common people" (as opposed to patricians, etc.), also "commonality; the mass, the multitude; the lower class," from PIE *ple- (see pleio-). In general (non-historical) use from 1580s.
plebiscite (n.) Look up plebiscite at Dictionary.com
"direct vote of the people," 1860 (originally in reference to Italian unification), from French plébiscite (1776 in modern sense, originally with reference to Switzerland), from Latin plebiscitum "a decree or resolution of the people," from plebs (genitive plebis) "the common people" (see plebeian (adj.)) + scitum "decree," noun use of neuter past participle of sciscere "to assent, vote for, approve," inchoative of scire "to know" (see science). Used earlier (1530s) in a purely Roman historical context. Related: Plebiscitary.
plectrum (n.) Look up plectrum at Dictionary.com
something used to pluck the strings of a musical instrument, 1620s, from Latin plectrum, from Greek plektron "thing to strike with" (pick for a lyre, cock's spur, spear point, etc.), from plek-, root of plessein "to strike" (see plague (n.)).
pled Look up pled at Dictionary.com
past tense and past participle of plead (v.).
pledge (v.) Look up pledge at Dictionary.com
c.1400, "to promise" (something to someone), "to give over as security for repayment," also "promise faith to," from pledge (n.) and from Old French plegier, from plege (n.). From mid-15c. as "to stand surety for, be responsible for;" late 15c. as "to mortgage." Meaning "put (someone) under oath" is from 1570s; sense of "to solemnly promise or guarantee" is from 1590s, as is sense "to drink a toast." Related: Pledged; pledging.
pledge (n.) Look up pledge at Dictionary.com
mid-14c., "surety, bail," from Old French plege (Modern French pleige) "hostage, security, bail," probably from Frankish *plegan "to guarantee," from *pleg-, a West Germanic root meaning "have responsibility for" (cognates: Old Saxon plegan "vouch for," Middle Dutch plien "to answer for, guarantee," Old High German pflegan "to care for, be accustomed to," Old English pleon "to risk the loss of, expose to danger;" see plight (v.)).

Meaning "allegiance vow attested by drinking with another" is from 1630s. Sense of "solemn promise" first recorded 1814, though this notion is from 16c. in the verb. Weekley notes the "curious contradiction" in pledge (v.) "to toast with a drink" (1540s) and pledge (n.) "the vow to abstain from drinking" (1833). Meaning "student who has agreed to join a fraternity or sorority" dates from 1901.
Pleiades (n.) Look up Pleiades at Dictionary.com
late 14c., the seven daughters of Atlas and Pleione, transformed by Zeus into seven stars, from Latin Pleiades, from Greek Pleiades, perhaps literally "constellation of the doves" from a shortened form of peleiades, plural of peleias "dove" (from PIE root *pel- "dark-colored, gray"). Or perhaps from plein "to sail," because the season of navigation begins with their heliacal rising.

Old English had the name from Latin as Pliade. Mentioned by Hesiod (pre-700 B.C.E.), only six now are visible to most people; on a clear night a good eye can see nine (in 1579, well before the invention of the telescope, the German astronomer Michael Moestlin (1550-1631) correctly drew 11 Pleiades stars); telescopes reveal at least 500. Hence French pleiade, used for a meeting or grouping of seven persons.
plein-air (adj.) Look up plein-air at Dictionary.com
1894, from French phrase en plein air, literally "in the open air." The style developed among French impressionists c.1870.
pleio- Look up pleio- at Dictionary.com
also pleo-, word-forming element meaning "more," from comb. form of Greek pleion "larger, greater in quantity, the more part, very many" (comp. of polys "much"), from PIE *ple- (cognates: Latin plere "to fill," plebes, "the populace, the common people;" Greek plethein "be full," pleres "full"), possibly a variant of *pele- (1) "to fill" (see poly-).
pleiotropy (n.) Look up pleiotropy at Dictionary.com
1921, from German pleiotrop (1910), from Greek pleion "greater in quantity, the more part, very many," (see pleio-) + trope "turn, turning" (see trope). Related: Pleiotropic; pleiotropism.
Pleistocene (adj.) Look up Pleistocene at Dictionary.com
"pertaining to the glacial period," 1839, coined by Lyell from Greek pleistos "most" (superlative of polys "much;" see poly-) + -cene.
plenary (adj.) Look up plenary at Dictionary.com
1510s, earlier plenar (mid-13c.), from Old French plenier, from Medieval Latin plenarius "entire, complete," from Latin plenus "full, filled, greatly crowded; stout, pregnant; abundant, abounding; complete," from PIE *pele- (1) "to fill" (see poly-). Related: Plenarily.
plenipotentiary (adj.) Look up plenipotentiary at Dictionary.com
1640s, from French plénipotentiaire and directly from Medieval Latin plenipotentiarius "having full power," from Late Latin plenipotens, from Latin plenus "full" (see plenary) + potentem "powerful" (see potent). As a noun from 1650s.
plenitude (n.) Look up plenitude at Dictionary.com
early 15c., from Old French plenitude and directly from Latin plenitudinem (nominative plenitudo) "abundance, completeness, fullness," from plenus "complete, full" (see plenary).
plenteous (adj.) Look up plenteous at Dictionary.com
c.1300, plentivous, from Old French plentiveus "fertile, rich" (early 13c.), from plentif "abundant," from plentee "abundance" (see plenty). Related: Plentifully; plentifulness.
plentiful (adj.) Look up plentiful at Dictionary.com
late 15c., from plenty + -ful. Related: Plentifully.
plentitude (n.) Look up plentitude at Dictionary.com
1610s, erroneous form of plenitude.
plenty (n.) Look up plenty at Dictionary.com
mid-13c., "as much as one could desire," from Old French plentee, earlier plentet "abundance, profusion" (12c., Modern French dialectal plenté), from Latin plenitatem (nominative plenitas) "fullness," from plenus "complete, full" (see plenary). Meaning "condition of general abundance" is from late 14c. The colloquial adverb meaning "very much" is first attested 1842. Middle English had parallel formation plenteth, from the older Old French form of the word.