An individual who is habitually lazy and avoids work or physical exertion: "Our obese neighbor tends to avoid exercise, over eats, and spends too much time as a sluggard in front of the TV or playing electronic games hour after hour on his computer."

1. Someone who hits a baseball very hard: "When the baseball player got up to bat, the crowd cheered, 'Come on, Slugger. Get another home run'."
2. A boxer who hits an opponent hard over and over again: "The prize fighter was a slugger who won against most of his opponents."