Source : Webster's Revised Unabridged Dictionary (1913)

Strawworm \Straw"worm`\, n.
   A caddice worm.

Source : WordNet®

strawworm
     n 1: caddisfly larva; constructs a case of silk covered with sand
          or plant debris [syn: {caddisworm}]
     2: larva of chalcid flies injurious to the straw of wheat and
        other grains [syn: {jointworm}]