CONCAVE, a. [L. Hollow. See Cave.] 1. Hollow, and arched or rounded, as the inner surface of a spherical body; opposed to convex; as a concave glass.2. Hollow, in a general sense; as the concave shores of the Tiber.3. In botany, a concave leaf is one whose edge stands above the disk.CONCAVE, n. A hollow; an arch, or vault; as the ethereal concave. CONCAVE, v.t. To make hollow.
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