• 襞ひだ

  fold, pleat, gathers, tuck

• 襞襟ひだえり

  ruff, ruffled collar, ruffed collar

• 褶襞しゅうへき

  folds (e.g. on a mountain)

• 山襞やまひだ

  folds of a mountain

• 肉襞にくひだ

  pussy

• 膣襞ちつひだ

  pussy lips, labial folds