noun

• A participant in a boxing match; a fighter who boxes.
• A breed of stocky, medium-sized, short-haired dog with a square-jawed muzzle.
• A type of internal combustion engine in which cylinders are arranged in two banks on either side of a single crankshaft.
• The person running a game of two-up.
• One who packs boxes.
• A letterboxer.
• (historical) A Chinese anti-imperial and xenophobic rebel of the early 1900s.
• A surname.