expression, godan verb (-su)
let one's hair hang down
Describes the action of allowing one's hair to fall loosely, often implying a relaxed or unkempt state.
彼女は長い髪を垂らして、風に揺らしていた。
She let her long hair hang down, swaying in the wind.
Phrase composed of 髪 (hair), を (object marker), and 垂らす (to let hang down).