pum‧mel past tense and past participle pummelled, present participle pummelling British English, past tense and past participle pummeled, present participle pummeling American English [transitive]
to hit someone or something many times quickly, especially using your fists (=closed hands) [= beat]:
Diane leaned over and pummeled the pillows.
pummel something with something
She flew at him, pummelling his chest with her fists.
The cook pummelled at the dough.
The platoon was pummeled by heavy machine-gun fire.
to completely defeat someone at a sport