The crossword solution for the term 'Siena Sweetie' is CARA, which is a four letter word. CARA is an Italian female given name, derived from the Latin carus, meaning 'BELOVED'. It is also a popular nickname for the city of Siena in Italy, which is known for its beautiful architecture and stunning views. The term 'Siena Sweetie' is often used to refer to someone who is from Siena or has a special connection to the city.