The term REFRAIN BITs can be broken down into two crossword solutions: LAS (3 letters) and LALAS (5 letters). LAS is an acronym for Latin American Studies, which is an interdisciplinary field of study that focuses on the history, culture, and politics of Latin America. LALAS is an acronym for Latin American and Latino/a Studies, which is a field of study that examines the experiences of Latin American and Latino/a people in the United States.