Mex.

Mexican.

Mexico.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mex

The citadel of Mex had several breaches made in the works, but no guns were dismounted.
The Egyptian campaigns, 1882 to 1885|Charles Royle
Mexicanos will crop their hair and a Latin won't, so I assume he is a Mex.
Warren Commission (11 of 26): Hearings Vol. XI (of 15)|The President's Commission on the Assassination of President Kennedy
All that Mex would do was argue that a knife was better than a gun.
The Coyote|James Roberts
So I up and bought the damsel for him, paid one hundred Mex.
The Honorable Percival|Alice Hegan Rice

Mex stood on guard in the first partition door, a butcher knife in her hand.
A Dream of Empire|William Henry Venable

British Dictionary definitions for mex

MEX

abbreviation for

Mexico (international car registration)

Mex.

abbreviation for

Mexican

Mexico

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012