D defs.my
Entry 2 senses Webster, 1913

Ligula

/(lĭg"ū̇*lȧ)/ · Lig·u·la · IPA /ˈlɪɡ.jʊ.lə/
01 n. See Ligule.
pl. Ligulæ, Ligulas ((-lē))
  1. 1.
    See Ligule.(Bot.) See: Ligule
  2. 2.
    The central process, or front edge, of the labium of insects. It sometimes serves as a tongue or proboscis, as in bees.(Zool.)