Definition of laugh noun from the Oxford Advanced American Dictionary

     

    laugh

     noun
    noun
    NAmE//læf//
     
     
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  1. 1 [countable] the sound you make when you are amused or happy to give a laugh a short/nervous/hearty laugh His first joke got the biggest laugh of the night. see also belly laugh
  2. 2 a laugh [singular] (informal) an enjoyable and amusing occasion or thing that happens And he didn't realize it was you? What a laugh!
  3. Idioms
    a barrel of laughs(often ironic)
     
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    very amusing; a lot of fun Life hasn't exactly been a barrel of laughs lately.
    do something for a laugh/for laughs
     
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    to do something for fun or as a joke I just did it for a laugh, but it got out of hand.
    have the last laugh
     
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    to be successful when you were not expected to be, making your opponents look stupid or silly
    have a (good) laugh (about something)
     
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    to find something amusing I was angry at the time but we had a good laugh about it afterward. My family and friends all had a good laugh at my expense.
See the Oxford Advanced Learner's Dictionary entry: laugh