ligule

from WordNet (r) 3.0 (2006)
ligule
    n 1: (botany) any appendage to a plant that is shaped like a
         strap
    
from The Collaborative International Dictionary of English v.0.48
Ligule \Lig"ule\ (l[i^]g"[-u]l), n. [L. ligula, lingula, little
   tongue, dim of lingua tongue : cf. F. ligule.]
   1. (Bot.)
      (a) The thin and scarious projection from the upper end of
          the sheath of a leaf of grass.
      (b) A strap-shaped corolla of flowers of Composit[ae].
          [1913 Webster]

   2. (Anat.) A band of white matter in the wall of fourth
      ventricle of the brain.
      [1913 Webster]
    

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