onager

• POS: Noun
• HYPHEN: on=a=ger

CIDE DICTIONARY

onager, n. [L. onager, onagrus, Gr. .].

•  A military engine acting like a sling, which threw stones from a bag or wooden bucket, and was operated by machinery.  Fairholt.  [1913 Webster]
•  A wild ass of central Asia, especially the koulan (Equus hemionus syn. Equus hemippus syn. Equus onager, formely Asinus onager).  [1913 Webster]

OXFORD DICTIONARY

onager, n.
1 a wild ass, esp. Equus hemionus of Central Asia.
2 hist. an ancient military engine for throwing rocks.

Etymology

ME f. L f. Gk onagros f. onos ass + agrios wild