Source : Webster's Revised Unabridged Dictionary (1913)

Canaliculate \Can`a*lic"u*late\, Canaliculated
\Can`a*lic"u*la`ted\, a. [L. canaliculatus channeled, fr.
   canaliculus, dim. of canalis. See {Canal}.]
   Having a channel or groove, as in the leafstalks of most
   palms.

Source : WordNet®

canaliculate
     adj : having thin parallel channels; "canaliculate leafstalks of
           certain plants"