1) Bed part 2) Panel 3) Pillow backing 4) Top directors in part of bed 
[furniture] The headboard is a piece of furniture that attaches to the head of a bed. Historically, they served to isolate sleepers from drafts and cold in less insulated buildings, and thus were made of wood, which is less thermally conductive than stone or brick. Constructed to create space from the wall (via thicker end pillars) they all...[train] A Train headboard is a board hung on the front of a locomotive. Generally it can depict a named train, although other purposes also exist. Headboards are distinct from locomotive nameplates. In the United Kingdom, headboards were common on the public railway in the age of steam and into the age of diesel and electric trains, althoug...
An upright structure rising above the mattress at the head of the bed.
Wood or metal plate fixed in the head of a sail.
Head'board` (-bōrd`) noun A board or boarding which marks or forms the head of anything; as, the headboard of a bed; the headboard of a grave. 
The upright structure attached to the head of the bed frame.
[n] - a vertical board or panel forming the head of a bedstead
noun a vertical board or panel forming the head of a bedstead