一种蛾的幼虫,螟蛉
Bollworm \Boll"worm`\, n. (Zo["o]l.) The larva of a moth ({Heliothis armigera}) which devours the bolls or unripe pods of the cotton plant, often doing great damage to the crops.
bollworm n : any of various moth caterpillars that destroy cotton bolls