1 [I] to rest while you are doing sth enjoyable, especially after work or effort 休息（尤指在工作或努力之后）: This holiday will give you a chance to relax. 这个假期会让你有机会轻松一下。They spent the evening relaxing in front of the television. 他们这一晚在电视机前轻松度过。

2 [I] to become calmer and less worried 变得镇定或放心: Relax -- everything's going to be OK! 放心好了，一切都不会有问题的！

3 [I,T] to become or make sb/sth become less hard or tight （使）放松，松弛 · A hot bath will relax you after a hard day's work. 经过一天辛劳工作，洗个热水浴会使你轻松舒畅。Don't relax your grip on the rope! 抓紧绳子别松手！

4 [T] to make rules or laws less strict 放宽（规则或法律）