|the offspring of a zebra and a donkey.|
|a chattering or flighty, light-headed person.|
atresia a·tre·sia (ə-trē'zhə, -zhē-ə)
The congenital absence or closure of a normal body orifice or tubular passage such as the anus, intestine, or external ear canal.
The degeneration and resorption of one or more ovarian follicles before maturation.