单词 umbois 释义 ▪ I. ‖ umbo|mb|Pl. umbones |mbniz|, umbos.[L. umbo, umbnis shield-boss, knob, projection, etc. Cf. F. ombon (in sense 1).]1. The boss of a shield, usually in or near the centre, and sometimes having a sharp point.1721Swift Poems, Georg...