[UNDER-1 4 a. Cf. UNDERHUNG ppl. a.] Projection, protrusion (of the lower jaw).

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1842.  Youatt, Dog, iv. (1845), 99. A second cross considerably lessens the underhanging of the lower jaw.

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1876.  T. Bryant, Pract. Surg. (ed. 2), I. 515. In some cases complete underhanging of the jaw is present.

3