The term 'Cowboy with a Lariat' can be summarized as a Roper, which is a five-letter word. A Roper is a cowboy who uses a lariat, which is a long rope used to catch and tie animals, usually horses or cattle. The lariat is thrown around the animal's neck or legs and then pulled tight to restrain it. Ropers are skilled in the use of the lariat and often compete in rodeos and other competitions.