资料来源 : pyDict

在身体周围筑巢的幼虫

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Caseworm \Case"worm`\, n. (Zo["o]l.)
   A worm or grub that makes for itself a case. See {Caddice}.

资料来源 : WordNet®

caseworm
     n : insect larva that constructs a protective case around its
         body