1 [I,T] if you unwind sth or if sth unwinds, it comes away from sth that it had been put round 解开，松开，展开（卷起的东西）: The bandage had unwound. 绷带松开了。

2 [I] (informal 非正式) to relax, especially after working hard 放松，松弛（尤指辛勤工作以后）: After a busy day, it takes me a while to unwind. 忙了一整天，我要花好些时候才能松弛下来。 ☞Look at wind ³. 参看wind^3。