1. To remain a guest in a place, especially someone's home, for too long, to the point where the host no longer wishes one to stay. After the cool reception I received at breakfast, it was apparent that I had overstayed my welcome at the cottage of my father's friend.

2. By extension, to do something that makes one no longer welcome in or at a place. Things were going fine at the dinner meeting until my coworker made a rather off-color joke, at which point it seemed that we'd overstayed our welcome.