ichidan verb, transitive verb
squint (one eye); narrow (one's eyes)
Used specifically for deliberately narrowing or squinting one eye, often to see better or as a gesture. The object is typically 目 (eye).
彼は遠くを見ようと片目をすがめた。
He squinted one eye to try to see far away.
眩しくて、思わ
It was so bright that I instinctively narrowed my eyes.