wetback

• POS: Noun
• HYPHEN: wet=back

CIDE DICTIONARY

wetback, n. 

•  A Mexican who enters the United States illegally, by wading across the Rio Grande; -- disparaging and offensive.  [PJC]
•  An offensive term for a person of Mexican descent, usually intended and considered as an ethnic slur.  [WordNet 1.5]

OXFORD DICTIONARY

wetback, n. US colloq. an illegal immigrant from Mexico to the US.

Etymology

WET + BACK: from the practice of swimming the Rio Grande to reach the US

THESAURUS

wetback

Aussie, Boche, Canuck, Chink, DP, Guinea, Hunk, Hunkie, Jerry, Kraut, Krauthead, Mick, Mickey, Paddy, dago, displaced person, emigrant, emigre, evacue, evacuee, exile, expatriate, frog, greaseball, greaser, immigrant, in-migrant, limey, migrant, migrator, migratory worker, out-migrant, stateless person, trekker