An egg is the shell-covered, roundish object that's laid by birds and reptiles, which usually has an embryo inside. When an egg hatches, a baby chick, snake, or lizard comes out.

Fertile eggs are the ones that become animals, while those laid by infertile birds are the kind you eat, scrambled or fried, for breakfast. The ovum, a reproductive cell in female animals, including humans, is also an egg. Colloquially, if you "lay an egg," you make a total mess of something, and if you "have egg on your face," you look foolish. If, however, you're considered a "good egg," you're a pal or a nice person.

Definitions of egg
  1. noun
    animal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes; especially the thin-shelled reproductive body laid by e.g. female birds
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    egg or young of an insect parasitic on mammals especially a sucking louse; often attached to a hair or item of clothing
    the mass of eggs deposited by fish or amphibians or molluscs
    the eggs or egg-laden ovary of a fish
    silkworm seed
    eggs of a silkworm
    eggs of female fish
    the egg mass or spawn of certain crustaceans such as the lobster
    type of:
    egg cell, ovum
    the female reproductive cell; the female gamete
  2. noun
    oval reproductive body of a fowl (especially a hen) used as food
    synonyms: eggs
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    type of:
    food product, foodstuff
    a substance that can be used or prepared for use as food
  3. verb
    throw eggs at
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    type of:
    bombard, pelt
    cast, hurl, or throw repeatedly with some missile
  4. verb
    coat with beaten egg
    egg a schnitzel”
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    type of:
    coat, surface
    put a coat on; cover the surface of; furnish with a surface
  5. noun
    one of the two male reproductive glands that produce spermatozoa and secrete androgens
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    a man's testicles (from Cockney rhyming slang: cobbler's awl rhymes with ball)
    undescended testicle, undescended testis
    a testis that fails to move into the scrotum as the male fetus develops
    type of:
    gonad, sex gland
    a gland in which gametes (sex cells) are produced
    male reproductive gland
    the reproductive organs of a man
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