warble fly

1. An abscessed boillike swelling on the back of cattle, deer, and certain other animals, caused by the larva of a warble fly.
   动物背上的肿块由一种牛皮下蝇幼虫引起的牛、鹿或其他某些特定动物的背上的脓肿。

noun

1. hairy bee-like fly whose larvae produce lumpy abscesses (warbles) under the skin of cattle