/ˈlu:sn ||; ˈlusṇ/verb[I,T] to become or make sth less tight （使）松开，放松，松弛 [T] to loosen your tie/belt 松开领带╱皮带Don't loosen your grip on the rope or you'll fall. 抓紧绳子别松手，要不会掉下来的。 loosen (sb/sth) up to relax or move more easily （使）放松，行动更灵活:
These exercises will help you to loosen up. 这运动可帮你松弛下来。