Source : Webster's Revised Unabridged Dictionary (1913)

Weevil \Wee"vil\, n. [OE. wivel, wevil, AS. wifel, wibil; akin
   to OD. wevel, OHG. wibil, wibel, G. wiebel, wibel, and
   probably to Lith. vabalas beetle, and E. weave. See {Weave}.]
   (Zo["o]l.)
   Any one of numerous species of snout beetles, or
   Rhynchophora, in which the head is elongated and usually
   curved downward. Many of the species are very injurious to
   cultivated plants. The larv[ae] of some of the species live
   in nuts, fruit, and grain by eating out the interior, as the
   plum weevil, or curculio, the nut weevils, and the grain
   weevil (see under {Plum}, {Nut}, and {Grain}). The larv[ae]
   of other species bore under the bark and into the pith of
   trees and various other plants, as the pine weevils (see
   under {Pine}). See also {Pea weevil}, {Rice weevil}, {Seed
   weevil}, under {Pea}, {Rice}, and {Seed}.

Source : WordNet®

weevil
     n : any of several families of mostly small beetles that feed on
         plants and plant products; especially snout weevils and
         seed weevils