noun
spare time; free moment
Literary term for a brief interval of free time. Rare in modern conversation; more common words are 暇 (ひま) or 余暇 (よか).
彼は寸隙を惜しんで勉強した。
He grudged even a spare moment and studied.
noun
small opening; narrow crack
Literary term for a tiny gap or fissure. Rare; modern Japanese would use 隙間 (すきま) or 割れ目 (われめ).
壁の寸隙から光が漏れていた。
Light leaked through a small crack in the wall.