A hard white protuberance on the beak or jaw of an embryo bird or reptile that is used for breaking out of the shell and is later lost.
Más ejemplos en oraciones
- It all started nearly 50 days ago when I poked my egg tooth out of my shell.
- That's an egg tooth that it used to cut its way out of its shell in just the same way as reptiles and birds do.
- It's also lacking an egg tooth, but it's got regular teeth in its beak - as well as a long bony tail that make it look rather different from modern birds.
Definición de egg tooth en:
- el diccionario Inglés de EE.UU.