Results of a study documenting the Mexican American's unique Spanish dialectal expressions used in the barrios of San Antonio, Texas, and its surrounding areas are presented. The expressions included are those which were not recorded in the "Diccionario de la Real Academia Espanola" (19th Edition) or which were recorded therein but with different meanings. The glossary defines approximately 1,000 dialectal terms, idiomatic phrases, interjections, proverbs, maxims, and familiar sayings. Divided into three sections, the glossary reflects the language used by different age, social, and economic groups living in the study area. Section I includes all terms, archaic terminology, and words of Spanish American origin recorded or not in the "Diccionario." Section II provides locutions and idiomatic expressions which consist of two or more words whose grouping as a phrase has its own peculiar meaning. Section III includes proverbs, maxims, or familiar sayings of the study group. Using the Spanish alphabet, entries are alphabetically listed. Significance of the Spanish dialectal term is given in English. A sample sentence in Spanish and its English translation are provided. Phrases in Sections II and III are alphabetized according to one of the words in each phrase, using the following order of preference: noun, adjective, adverb, interjection, verb, and pronoun. (NQA)