| 单词 | egg tooth |
| 释义 | egg toothnouna calcareous prominence at the tip of the beak or upper jaw of an embryonic bird or reptile, used to break through the eggshell at hatching. Origin of egg toothFirst recorded in 1890–95 Words nearby egg tootheggshell porcelain, egg slice, egg spoon, egg stone, egg timer, egg tooth, egg white, Egham, egis, eglandular, eglantine Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for egg tooth
British Dictionary definitions for egg toothegg tooth noun(in embryo birds and reptiles) a temporary tooth or (in birds) projection of the beak used for piercing the eggshell Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for egg toothegg tooth 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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