expression, ichidan verb
wrinkle up; furrow; crimple
Used for facial expressions, especially wrinkling the brow or nose. Often appears as 眉間にしわを寄せる (to furrow one's brow).
彼は眉間にしわを寄せて考え込んだ。
He furrowed his brow and thought deeply.
彼女は鼻にしわを寄
She wrinkled her nose and laughed.