catcher

noun

1. a person or thing that catches.
2. Baseball. the player stationed behind home plate, whose chief duty is to catch pitches not hit by the batter.
3. a member of an aerialist team, as in a circus, who hangs head down from a trapeze and catches another member who has completed a jump or somersault through the air.
4. Metalworking. a person who feeds metal rods through a looping mill.
5. Electronics. catcher resonator.See under Klystron.

noun

1. a person or thing that catches, esp in a game or sport
2. baseball a fielder who stands behind home plate and catches pitched balls not hit by the batter