The "catcher’s mitt" in baseball is significant because it is specially designed to aid catchers in receiving pitches and making tags effectively. Unlike regular gloves, the catcher’s mitt has a padded pocket, allowing for maximum grip and protection against fast pitches. This design enhances a catcher's ability to catch various pitch types while minimizing the risk of injury. Additionally, the mitt's structure supports quick movements for throws to bases, making it essential for defensive strategy and overall gameplay efficiency.