A slugger is a baseball player who hits the ball very hard.
A slugger is usually very strong and good at baseball.
Examples:
The slugger hit the ball out of the park.
The team needs a good slugger to win.
The slugger is the best player on the team.
The slugger can hit the ball to the moon!
Every team wants a slugger who can hit every ball.
The slugger is the hero of the game.