Definition of senator noun from the Oxford Advanced American Dictionary

  

senator

 noun
noun
NAmE//ˈsɛnət̮ər//
 
Senator(abbreviation Sen.)
 
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 a member of a senate Senator McCarthy She has served as a Democratic senator for North Carolina since 2009.
NAmE//ˌsɛnəˈtɔriəl//
 
adjective [only before noun] a senatorial candidate
See the Oxford Advanced Learner's Dictionary entry: senator