headboard

from WordNet (r) 3.0 (2006)

headboard
    n 1: a vertical board or panel forming the head of a bedstead

from The Collaborative International Dictionary of English v.0.48

Headboard \Head"board`\ (h[e^]d"b[=o]rd`), n.
   A board or boarding which marks or forms the head of
   anything; as, the headboard of a bed; the headboard of a
   grave. Headborough