这个短语的字面解释是“把双脚抬高”。这是什么意思呢？请看对话：

    A: What time is it now?

    B: It’s almost 7 p.m. You’ve been working so hard. Come on, sit here and put your feet up! Let me give you a back rub.

    A: Thanks, honey. I like nothing better than putting my feet up after a day of gardening!

    Note: If someone puts his feet up, he cannot walk around or run errands. It’s not difficult to picture someone sitting back and putting his feet up on the stool or table in front as a gesture of relaxing. It’s also possible that the person is lying in bed. Therefore, this idiom simply means “relax” and “have a rest.” A similar saying would be “kick back.” For example: Finally it’s time to put my feet up after a day of hard work!