The term 'half a sawbuck' is an informal expression for the sum of five dollars. This can be represented by four different crossword solutions: FIVER (5 letters), ABE (3 letters), FIVE (4 letters), and FIN (3 letters). FIVER is a slang term for five dollars, ABE is a reference to Abraham Lincoln, whose face appears on the five-dollar bill, FIVE is the numerical representation of five dollars, and FIN is a reference to the fineness of the five-dollar bill.