The term 'Baja Bye-Bye' is a combination of two words, 'Baja' and 'Bye-Bye'. Baja is a region in Mexico, located at the southern tip of the Baja California peninsula. The word 'Bye-Bye' is an informal way of saying goodbye. The crossword solution for this term is 'ADIOS', which is a Spanish word meaning goodbye. Therefore, the term 'Baja Bye-Bye' can be interpreted as a way of saying goodbye to the Baja region of Mexico.