A DIME is a type of coin used in the United States. It is worth 10 cents and is made up of 91.67% copper and 8.33% nickel. The crossword solutions for A DIME are THIN (4 letters), ONE (3 letters), UNUM (4 letters), and STOPON (6 letters). THIN refers to the physical size of the coin, which is THIN compared to other coins. ONE refers to the value of the coin, which is ONE dime. UNUM is Latin for 'ONE' and is also a reference to the value of the coin. STOPON is a reference to the fact that the dime is the smallest denomination of coin in the US, so it is the last coin to be used when making change.