noun
pussy lips; labial folds
Slang/vulgar term for the labia minora or vaginal folds. The literal gloss 'labial folds' reflects the anatomical meaning of 膣襞.
ネットのスラングで「膣襞」って見たけど、普通は使わない言葉だよね。
I saw '膣襞' in online slang, but it's not a word you'd normally use.
陰唇 is the standard medical term for labia, while 膣襞 is a slang/vulgar expression.
Compound of 膣 (vagina) and 襞 (fold). The reading ちつひだ follows standard on-kun mixing.