D defs.my
Entry 2 senses Webster, 1913

Ligule

/(lĭg"ū̇l)/ · Lig·ule · IPA
01 n. The thin and scarious projection from the upper end of the sheath of a leaf of grass.
  1. 1.
    The thin and scarious projection from the upper end of the sheath of a leaf of grass.(Bot.)
  2. 2.
    A band of white matter in the wall of fourth ventricle of the brain.(Anat.)