n.
1.emergence during embryonic development of various characters or structures that appeared during the evolutionary history of the strain or species
2.a section of a musical composition or movement in which themes introduced earlier are repeated
3.a summary at the end that repeats the substance of a longer discussion
Idiom of the Day
hide one's face in shame
to cover one's face because of shame or embarrassment
The man wanted to hide his face in shame after he lost his job.