pun       
 noun [ C ] uk/pʌn/ us/pʌn/
 双关语,语义双关的俏皮话
a humorous use of a word or phrase that has several meanings or that sounds like another word
  She made a couple of dreadful puns. 她说出了几个令人不快的双关语。 
 This is a well-known joke based on a pun: "What's black and white and red (= read) all over?" "A newspaper." 这是一个有名的一语双关的俏皮话,“什么东西通篇有黑有白又有红(英文中‘红’音同‘读’)?”“报纸。” 
 Synonym: play on words
Compare: wordplay
 pun      
verb [ I ] uk/pʌn/ us/pʌn/ -nn-
 说双关语
to make a pun