a. [ L. supinus, akin to sub under, super above. Cf. Sub-, Super-. ]
If the vine
On rising ground be placed, or hills supine. Dryden. [ 1913 Webster ]
He became pusillanimous and supine, and openly exposed to any temptation. Woodward. [ 1913 Webster ]
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n. [ L. supinum (sc. verbum), from supinus bent or thrown backward, perhaps so called because, although furnished with substantive case endings, it rests or falls back, as it were, on the verb: cf. F. supin. ] (Lat. Gram.) A verbal noun; or (according to C.F.Becker), a case of the infinitive mood ending in -um and -u, that in -um being sometimes called the former supine, and that in -u the latter supine. [ 1913 Webster ]