1. gap; opening; aperture; crevice; crack; chink; space
どこかに隙間を見つけようと思い、しばらく歩いた。I walked for a while, thinking I would find a gap somewhere.
2. spare moment; interval; break
スケジュールの隙間に会議を入れた。I squeezed a meeting into a gap in my schedule.
3. unguarded moment; carelessness; chink in one's armor; weak spot