柯林斯词典flea /fliː/ (fleas) 1. N-COUNT A flea is a very small jumping insect that has no wings and feeds on the blood of humans or animals. 跳蚤 返回 flea剑桥词典a very small jumping insect that feeds on the blood of animals and humans 蚤，跳蚤 习语send sb away with a flea in their ear 返回 flea