Flea n. Any of various small, wingless, bloodsucking insects of the order Siphonaptera that have legs adapted for jumping and are parasitic on warm-blooded animals.

• 跳蚤,蚤目的各种小型、无翅吸血昆虫中的任一种,长有适于跳跃的腿,寄生在温血动物身上。