A fighter is a character class in Dungeons & Dragons. In the Original Dungeons & Dragons game, this class was known as a Fighting Man. A fighter specializes in weapons and is very tough. They often act as protectors to other characters.
In AD&D and Basic D&D, fighters and their sub-classes have the strongest hit dice and ability to-hit. In Dungeons & Dragons Third Edition, fighters have d10s for hit dice, full BAB, and good Fortitude saves. They get many bonus feats related to combat. In Dungeons & Dragons Fourth Edition, fighters are considered to fulfill the defender role.