The term 'boat movers' can be summarized by the solution to the crossword clue 'OARS, ' which is a four-letter word. OARS are long, flat pieces of wood or other material that are used to propel a boat through the water. They are usually held in both hands and moved back and forth in a rowing motion. OARS are an essential tool for boat movers, as they provide the necessary power to move the boat forward.