Egg-tooth definition

A hard toothlike projection on the beak of an embryonic bird or the snout of an embryonic reptile that is used to break through the eggshell upon hatching and that later falls off or is absorbed.
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A tooth-like structure on the nose or beak of young reptiles and birds used to break the egg membrane or shell at the time of hatching.
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A hard toothlike projection on the beak of an embryonic bird or the snout of an embryonic reptile that is used to break through the eggshell upon hatching and that later falls off or is absorbed.
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A hard, toothlike projection from the beak of embryonic birds, or from the upper jaw of embryonic reptiles, that is used to cut the egg membrane and shell upon hatching and that later falls off.
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(zoology) A small, sharp, cranial protuberance used by offspring to break or tear through the egg's surface during hatching.
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Other Word Forms

Noun

Singular:
egg-tooth
Plural:
egg-teeth