noun
Slang and vulgar term for female genitalia, literally 'flesh folds'. Used in explicit or crude contexts.
あのエロ漫画には肉襞の描写が多すぎる。
That erotic manga has too many depictions of pussy.
noun
fleshy fold
Rare literal meaning: a fold or pleat of flesh. Not commonly used outside anatomical or descriptive contexts.
解剖学の資料で「肉襞」という語を見たが、一般的ではない。
I saw the word 肉襞 in an anatomy reference, but it's not common.
Compound of 肉 (niku, 'flesh') and 襞 (hida, 'fold, pleat'). The reading ひだ for 襞 is standard. The slang sense derives from the visual resemblance.