‖n.; pl. L. Ligulæ E. Ligulas [ L., a little tongue. See Ligule. ] 1. (Bot.) See Ligule. [ 1913 Webster ]

2. (Zool.) (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. [ 1913 Webster ]