Etymology
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ovoviviparous (adj.)

"producing eggs which are hatched within the body of the parent, but without placental attachment," 1801, from combining form of ovum "egg" + viviparous "bringing forth young alive." It occurs in many reptiles, and some fishes, insects, worms, etc. Related: Ovoviviparity.

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chopper (n.)
1550s, "one who chops," agent noun from chop (v.1). Meaning "meat cleaver" is by 1818. Meaning "helicopter" is from 1951, Korean War military slang (compare egg-beater); as a type of stripped-down motorcycle (originally preferred by Hells Angels) from 1965.
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roc (n.)

monstrous predatory bird of Arabian mythology, 1570s, from Arabic rukhkh, from Persian rukh. It is mentioned in Marco Polo's account of Madagascar; according to OED, modern use of the word mostly is due to translations of the "Arabian Nights" tales. Hence roc's egg "something marvelous or prodigious." Compare simurgh.

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lecithin (n.)
fatty substance found in the yolks of eggs (among other places), 1853, from French lécithine (coined 1850 by French pharmacist Theodore N. Gobley), from Greek lekithos "egg yolk," + chemical suffix -ine (2). Greek lekithos is of unknown origin; Beekes writes that, "Because of the suffixes and the meaning, the word is clearly of Pre-Greek origin." Related: Lecithinase.
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lysozyme 
type of immune-system enzyme found in tears, saliva, egg-whites, etc., 1922, named by its discoverer, Alexander Fleming (six years before he discovered penicillin), who coined it from lyso- "loosening, dissolving" + suffix from enzyme. So called because it attack bacteria cell walls.
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aerie (n.)
"eagle's nest," 1580s (attested in Anglo-Latin from early 13c.), from Old French aire "nest," Medieval Latin area "nest of a bird of prey" (12c.), perhaps from Latin area "level ground, garden bed" [Littré], though some doubt this [Klein]. Another theory connects it to atrium. Formerly spelled eyrie (1660s) on the mistaken assumption that it derived from Middle English ey "egg."
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mousse (n.)

1892, in cookery sense in reference to a frothy dish stiffened with egg whites, etc., from French mousse, from Old French mousse "froth, scum," from Late Latin mulsa "mead," from Latin mulsum "honey wine, mead," from neuter of mulsus "mixed with honey," related to mel "honey" (from PIE root *melit- "honey"). Meaning "preparation for hair" is from 1977, so called for resemblance of the substance. As a verb in this sense from 1984. Related: Moussed.

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brood (n.)
Old English brod "offspring of egg-laying animals, hatchlings, young birds hatched in one nest," from Proto-Germanic *brod (source also of Middle Dutch broet, Old High German bruot, German Brut "brood"), etymologically "that which is hatched by heat," from *bro- "to warm, heat," from PIE *bhre- "burn, heat, incubate," from root *bhreu- "to boil, bubble, effervesce, burn." Meaning "human offspring, children of one family" is from c. 1300.
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cocoon (n.)

"sikly envelop which the larvae of many insects spin as a covering while they are in the crysalis state," 1690s, from French coucon (16c., Modern French cocon), from coque "clam shell, egg shell, nut shell," 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.

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nest (n.)

"structure built by a bird or domestic fowl for the insulation and rearing of its young," Old English nest "bird's nest; snug retreat," also "young bird, brood," from Proto-Germanic *nistaz (source also of Middle Low German, Middle Dutch nest, German Nest; not found in Scandinavian or Gothic), from PIE *nizdo- (source also of Sanskrit nidah "resting place, nest," Latin nidus "nest," Old Church Slavonic gnezdo, Old Irish net, Welsh nyth, Breton nez "nest"), probably from *ni "down" + from PIE root *sed- (1) "to sit."

From c. 1200 of an animal or insect. Used since Middle English in reference to various accumulations of things, especially of diminishing sizes, each fitting within the next (such as a nest of drawers, early 18c.). Nest egg "retirement savings" is from 1700; it was originally "a real or artificial egg left in a nest to induce the hen to go on laying there" (nest ei, early 14c.), hence "something laid up as the beginning of a continued growth."

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