A crosse is another word for a lacrosse stick, the long-handled racket used to play the team sport. In lacrosse, the goalie holds a special, extra large crosse.
A crosse has a very long handle, with a triangular, netted head for catching the hard rubber lacrosse ball. Players use their crosses to carry and throw the ball to each other, ultimately trying to score points by aiming the ball into goals at either end of the field. The origin of the word crosse is the Old French croce, or "bishop's crook."