Definition of penny noun from the Oxford Advanced American Dictionary

     

    penny

     noun
    noun
    NAmE//ˈpɛni//
     
     
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  1. 1(pl. pennies) a cent
  2. 2 (pence) a small British coin and unit of money equal to 1/100th of one pound (£1) That will be 45 pence, please.
  3. Idioms
    every/somebody's last penny
     
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    the only remaining money They spent their last penny on that house, and it turned out to be a good investment.
    every penny
     
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    all of the money We collected $700 and every penny went to charity. She's on a high salary but I'm sure she deserves every penny.
    in for a penny, in for a pound(saying)
     
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    used to say that since you have started to do something, it is worth spending as much time or money as you need to in order to complete it
    not a penny
     
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    no money at all It didn't cost a penny. He has never paid me a penny. She hasn't got a penny to her name.
    a penny for your thoughts(saying)
     
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    used to ask someone what they are thinking about
    a penny saved is a penny earned(saying)
     
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    used to say that it is important to save money whenever possible
    penny wise and pound foolish(saying)
     
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    used to say that someone does not spend their money well, paying too much for large purchases and trying to save money on small things
    pinch pennies(informal)
     
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    to try to spend as little money as possible
    a pretty penny(old-fashioned)
     
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    a lot of money I bet that cost you a pretty penny.
    turn up like a bad penny(informal)
     
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    (of a person) to appear when they are not welcome or not wanted, especially when this happens regularly
See the Oxford Advanced Learner's Dictionary entry: penny