a day on which you do not have to work Most weeks, Sunday is my only day off. Why not take a few days off?Extra examples They gave me a day off when my mother died. We might get a day off if the snow’s bad. What are you going to do on your day off? I’ll have to take a day off to go and meet them at the airport. I’ve got the day off from school. Sunday is my only day off. You deserve a day off.