/on"euh jeuhr/ , n. , pl. onagri /-gruy'/ , onagers .
1. a wild ass, Equus hemionus, of southwestern Asia.
2. an ancient and medieval military catapult for throwing stones.
[ 1300-50; ME onager, onagrus wild ass ónagros (in both senses), alter. of ónos ágrios ass of the fields, wild ass (see ACRE) ]