American English

Definition of postal adjective from the Oxford Advanced American Dictionary

 

postal

 adjective
adjective
NAmE//ˈpoʊstl//
 
[only before noun]
 
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  • connected with the official system for sending and delivering letters, etc. the postal service/system postal charges
  • Idioms
    go postal (informal)
     
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    to become very angry He went postal when he found out.
    See the Oxford Advanced Learner's Dictionary entry: postal