American English

Definition of four number from the Oxford Advanced American Dictionary

 

four

 number
number
NAmE//fɔr//
 
 
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  • 4 There are examples of how to use numbers at the entry for five.
  • Idioms
    these four walls
     
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    used when you are talking about keeping something secret Don't let this go further than these four walls (= Don't tell anyone else who is not in the room now).