pommel (n.)

mid-13c., "ornamental knob;" c. 1300, "knob at the end of a sword hilt," from Old French pomel (12c., Modern French pommeau), "rounded knob," diminutive of pom "hilt of a sword," from Late Latin pomellum, diminutive of Latin pomum "apple" (see Pomona), the connecting notion being "roundness." Sense of "front peak of a saddle" first recorded mid-15c. In Middle English poetry it also sometimes meant a woman's breast. The gymnast's pommel horse is attested from 1908.

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Definitions of pommel from WordNet
pommel (n.)
a handgrip that a gymnast uses when performing exercises on a pommel horse;
pommel (n.)
handgrip formed by the raised front part of a saddle;
Synonyms: saddlebow
pommel (n.)
an ornament in the shape of a ball on the hilt of a sword or dagger;
Synonyms: knob
pommel (v.)
strike, usually with the fist;
Synonyms: pummel / biff