パイオツalso: ぱいおつFreq.FrequencyTop 50,000Meanings1nounboobs; titsslangSlang term for breasts, derived from reversing the syllables of おっぱい (oppai). Used in very casual, often vulgar contexts.See also: おっぱいあの子こ、パイオツでかいな。That girl has huge boobs.パイオツ見みせてよ。Show me your tits.