n wingless usually flattened bloodsucking insect parasitic on warm-blooded animals
n a person who has a nasty or unethical character undeserving of respect
n any of several small insects especially aphids that feed by sucking the juices from plants
n wingless insect with mouth parts adapted for biting; mostly parasitic on birds
n. 虱, 寄生虫, 小虫, (非正式)低贱的人, 不受欢迎的人, 卑鄙的人
[医] 虱