‖Lig″u‐la (lĭg″ū̍‐lȧ), n.; pl. L. Ligulæ (–lē), E. Ligulas (–lȧz). [L., a little tongue. See Ligule.] 1. (Bot.) See Ligule.
2. (Zoöl.) (a) The central process, or front edge, of the labium of insects. It sometimes serves as a tongue or proboscis, as in bees. [See Illust. under Labium, and Hymenoptera.] (b) A tongue-shaped lobe of the parapodia of annelids. See Parapodium.