The term 'Argentine Aunt' can be broken down into four crossword solutions: PERON (5 letters), EVITA (5 letters), PAMPAS (6 letters), and TIA (3 letters). PERON refers to Juan Peron, the former president of Argentina who was in power from 1946-1955 and 1973-1974. EVITA is a reference to his wife, Eva Peron, who was a powerful political figure in her own right. PAMPAS are the vast grasslands of South America, which are found in Argentina. Finally, TIA is the Spanish word for aunt, which is used to refer to an Argentine aunt.