'Umbones' definitions:

Definition of 'Umbones'

From: GCIDE
  • Umbo \Um"bo\, n.; pl. L. Umbones, E. Umbos. [L.]
  • 1. The boss of a shield, at or near the middle, and usually projecting, sometimes in a sharp spike. [1913 Webster]
  • 2. A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane; as, the umbo in the integument of the larvae of echinoderms or in the tympanic membrane of the ear. [1913 Webster]
  • 3. (Zool.) One of the lateral prominences just above the hinge of a bivalve shell. [1913 Webster] Umbonate

Words containing 'Umbones'