ペチャパイぺちゃぱいFreq.FrequencyTop 100,000Meanings1nounflat chest; small breastscolloquialColloquial, often playful or teasing term for a flat or small chest. Related to ぺちゃんこ (flat, squashed).See also: ぺちゃんこ彼かの女じょは自じ分ぶんのペチャパイを気きにしている。She is self-conscious about her flat chest.
