expression, ichidan verb
Describes drawing the eyebrows together in displeasure, worry, or concentration. Often used with 眉をひそめる as a near-synonym.
See also: 眉を顰める
彼は不機嫌そうに眉を寄せた。
He frowned in a bad mood.
難しい問題に眉を寄せて考え込んだ。
She furrowed her brows and pondered the difficult problem.