The term TEX-MEX MORSEL is a crossword solution that can be filled in with the word 'NACHO, ' which is a five-letter word. Nachos are a popular snack food originating from Mexico, and are now widely enjoyed in the United States. The dish consists of tortilla chips topped with melted cheese, jalapenos, and other ingredients. It is a classic example of Tex-Mex cuisine, which is a fusion of Mexican and American flavors.