noun

• 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.
• (mathematics) 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.
• (billiards) 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.