Ancient wild ass originating in Asia. It was also called hemion. In Greek it means half ass, wild ass. Its scientific name is Equus hemionus and belongs to the Equidae family.
It tells of an ancient crossbow-like war machine; where was placed the stone throwing was a rather concave shape resembling an ear of a donkey.
onagro:jumento or Asian wild donkey.
ANOTHER MEANING COLLOQUIAL IN VENEZUELA OF ONAGER IS: DONKEY, POLLINO OR CHAVEZ. WILD ANIMAL.