pommel

(noun) a handgrip that a gymnast uses when performing exercises on a pommel horse.

(noun) handgrip formed by the raised front part of a saddle. Synonyms: saddlebow.

(noun) an ornament in the shape of a ball on the hilt of a sword or dagger. Synonyms: knob.

(verb) strike, usually with the fist. Synonyms: pummel, biff. Example: "The pedestrians pummeled the demonstrators."