Combination meaning : The act of combining, the state of being combined or the result of combining. An object formed by combining. A sequence of numbers or letters used to open a combination lock. One or more elements selected from a set without regard to the order of selection. An association or alliance of people for some common purpose. A combination shot; a billiard; a shot where the cue ball hits a ball that strikes another ball on the table. A motorcycle and sidecar. A rapid sequence of punches or strikes in boxing or other combat sports.