All of the horizontal members that make up the top of the window or door frame.
The top member of a door or window frame; on doors, the frame consists of a head jamb, two side jambs and a threshold; window frames are the same, except the bottom member is called a sill or stool.
The horizontal frame member at the top of a window or door assembly.
Also called a yoke, it's the upper horizontal finish member in a window frame.