weevil

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of numerous beetles of the superfamily Curculionoidea, especially the snout beetles, that characteristically have a downward-curving snout and are destructive to nuts, fruits, stems, and roots.

from The Century Dictionary.

• noun A snout-beetle; any coleopterous insect of the section Rhynchophora (which see).
• noun Any insect which damages stored grain, as the fly-weevil, a local name in the southern United States for the grain-moth, Gelechia cerealella. See grain-moth, 2.
• noun The larva of the wheat-midge, Diplosis tritici. Also called red weevil.
• noun Phytonomus punctatus, whose larvæ feed on the leaves of clover in Europe and the United States.
• noun Sitones crinitus and S. flavescens, which feed upon the leaves of clover in Europe, their larvæ boring in the roots. The latter has been introduced into the United States.
• noun Otiorhynchus sulcatus and O. picipes, which feed upon the leaves and shoots of the grape in Europe.
• noun Rhynchites betuleti, a formidable grape-pest in Europe, which rolls the leaves of the vine.
• noun Anthonomus musculus, the adult of which destroys the blossoms and flower-stalks of the strawberry in the eastern United States.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) 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 larvæ 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 larvæ 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of several small herbivorous beetles in the superfamily Curculionoidea. Many of them have a distinctive snout.
• noun Any of several small herbivorous beetles in the family Curculionidae belonging to the superfamily Curculionoidea.
• noun Any of several similar but more distantly related beetles such as the biscuit weevil.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any of several families of mostly small beetles that feed on plants and plant products; especially snout beetles and seed beetles