(Originally) any of various moth larvae that live on oaks, especially as used by anglers for bait; (now usually) specifically (the larva of) an oak moth of the family Dioptidae.
Origin
Late 16th century; earliest use found in Arte of Angling.
Definition of oakworm in US English:
oakworm
noun
(Originally) any of various moth larvae that live on oaks, especially as used by anglers for bait; (now usually) specifically (the larva of) an oak moth of the family Dioptidae.
Origin
Late 16th century; earliest use found in Arte of Angling.