overjaw

noun

1. The upper jaw (superior maxillary).

   rare

   And when they eat, they move the overjaw and nought the nether jaw, and they have no tongue.

Where it comes from

From Middle English overjowe, over jawe, a partial calque of earlier Middle English over chavel (“upper jaw”), equivalent to over- + jaw.

Adapted from the Wiktionary entry overjaw (CC BY-SA 4.0).

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