Lĭg'ū-lȧ or Lĭg'ūle

Lĭg'ū-lȧ, Lĭg'ūle, n. [Lat. ligula, or lingula, little tongue, diminutive of lingua, the tongue; Fr. ligule.] (Bot.) (a.) The flat part of the leaf of a grass, in contradistinction from that part which sheathes the stem. (b.) A strap-shaped corolla of flowers of Syngenesia.

A botanical drawing of a grass leaf and stem, showing the ligule at the junction of the blade and sheath. — Ligule. (b.)