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onager.

The Asiatic wild ass or hemione (Equus hemionus), an animal of the horse family native to Asia; specifically, the Persian onager, Persian wild ass, or Persian zebra (Equus hemionus onager).

6 characters3 syllables approx.English language

Meaning & usage

noun/ˈɒnəd͡ʒə/Received-Pronunciation/-ɡə/Received-Pronunciation/ˈɑnəd͡ʒɚ/General-American/ˈɔː-/General-American
  1. The Asiatic wild ass or hemione (Equus hemionus), an animal of the horse family native to Asia; specifically, the Persian onager, Persian wild ass, or Persian zebra (Equus hemionus onager).

  2. A military engine acting like a sling which threw stones from a bag or wooden bucket powered by the torsion from a bundle of ropes or sinews operated by machinery; a torsion catapult.

    historical
Where this word comes from

From Middle English onager, onagir (“wild ass; military catapult”), from Anglo-Norman onager, Middle French onager, onagre, Old French onager, onagre (“wild ass; military catapult”) (modern French onagre), from Late Latin onager (“large siege engine”), Latin onager (“wild ass”), from Hellenistic Ancient Greek ὄναγρος (ónagros, “wild ass”), Byzantine Ancient Greek ὄναγρος (ónagros, “large siege engine”), from ὄνος (ónos, “ass”) + ἄγριος (ágrios, “wild”) (from ᾰ̓γρός (ăgrós, “countryside; field”) (possibly ultimately from Proto-Indo-European *h₂eǵ- (“to drive”)) + -ῐος (-ĭos, suffix forming adjectives)). The “military engine” sense alludes to the strong recoil of the engine, likened to an onager’s kick; see the 2007 quotation.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.