Old Sword is a term used to describe a type of sword that has been around for centuries. The two crossword solutions, CUTLASS (7 letters) and Estoc (5 letters), are both examples of Old Swords. CUTLASS is a short, curved sword with a single-edged blade that was popular among sailors in the 16th and 17th centuries. Estoc is a long, straight sword with a double-edged blade that was used by knights during the Middle Ages. Both swords were designed for close combat and were used to slash and thrust at opponents.