名詞 bot:

1. botfly larva; typically develops inside the body of a horse or sheep or human

bot 也作 bott

n.（名詞）
The parasitic larva of a botfly.
馬胃蠅蛆：馬蠅的寄生性幼蟲
bots (used with a sing. or pl. verb)A disease of mammals, especially cattle and horses, caused by infestation of the stomach or intestines with botfly larvae.
bots （與單數(shù)或復(fù)數(shù)動詞連用）蠅蛆?。河神R蠅幼蟲寄生于胃腸中而引起的哺乳動物，尤其是牛和馬的一種疾病

來源：
Middle English
中古英語
[probably of Low German origin]
[可能源于低地日耳曼語]