noun, noun or participle which takes 'suru'
beating someone up thoroughly; getting completely beaten up
Slang term for a one-sided, severe beating, either inflicted on someone or received. Often used in fighting games, sports, or online arguments to describe a total defeat. Can be used as a noun or with する.
See also: ぼっこぼこ
あのゲームでフルボッコにされた。
I got completely destroyed in that game.
彼はケンカで相手をフルボッコにしたらしい。
I heard he beat the other guy to a pulp in a fight.