noun
A band worn around the forehead, often for sports, fashion, or to keep hair or sweat out of the face.
テニスの試合中、彼はヘッドバンドをしていた。
He wore a headband during the tennis match.
noun
circlet
A decorative band or ring worn on the head, often as jewelry or a costume accessory.
彼女はパーティーで花のヘッドバンドをつけていた。
She wore a floral circlet at the party.