English

Definition of wetback noun from the Oxford Advanced Learner's Dictionary

 

wetback

 noun
noun
BrE BrE//ˈwetbæk//
 
; NAmE NAmE//ˈwetbæk//
 
(US English, taboo, slang)
 
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an offensive word for a Mexican person, especially one who enters the US illegally Word Origin 1920s: so named from the practice of swimming the Rio Grande to reach the US.