'Wireworm' definitions:

Definition of 'wireworm'

(from WordNet)
noun
Wormlike larva of various elaterid beetles; feeds on roots of many crop plants

Definition of 'Wireworm'

From: GCIDE
  • Wireworm \Wire"worm`\, n. (Zool.) (a) One of the larvae of various species of snapping beetles, or elaters; -- so called from their slenderness and the uncommon hardness of the integument. Wireworms are sometimes very destructive to the roots of plants. Called also wire grub. (b) A galleyworm. [1913 Webster]