Longman Dictionary of Contemporary English
title bar
noun
EXAMPLES FROM CORPUS
▪ Likewise, a peek at a window framed by title bar and scroll bars is enough to evoke the sacraments of Mac.
▪ One call might evoke a window, with the standard scroll bars and title bar.
▪ Open applications can be dragged to a title bar menu at the bottom of the screen.
Usage examples of "title bar".
Just to be an asshole, he modifies his X Windows options in such a way that none of the windows on the screen will have a title bar at the top.