Ligule
Ligule (lig"ul) , noun
[Latin ligula, lingula, little tongue, dim of lingua tongue: compare French ligule.]
1.
(a) (Botany) The thin and scarious projection from the upper end of the sheath of a leaf of grass.
(b)
(Botany) A strap-shaped corolla of flowers of Composita.
2.
(Anatomy) A band of white matter in the wall of fourth ventricle of the brain.