Pronunciation: (teks'meks'), [key]
of or pertaining to aspects of culture that combine Mexican and Texan or southwestern U.S. features, esp. aspects of culture developed in southern Texas based on or influenced by Mexican elements: Tex-Mex cooking; Tex-Mex music.
1. a form of Mexican Spanish having elements of English and spoken near the border of Texas and Mexico, esp. Mexican Spanish as spoken in Texas.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.