wetback
noun /ˈwetbæk/
/ˈwetbæk/
(US English, taboo, slang)- an offensive word for a Mexican person, especially one who enters the US illegally
湿背人(从墨西哥到美国的移民,尤指非法入境者) 词源1920s: so named from the practice of swimming the Rio Grande to reach the US.