The Collaborative International Dictionary of English v.0.48:

Bedstead \Bed"stead\, n. [Bed + stead a frame.]
   A framework for supporting a bed.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bedstead
    n 1: the framework of a bed [syn: bedstead, bedframe]

Easton's 1897 Bible Dictionary:

Bedstead
   used in Deut. 3:11, but elsewhere rendered "couch," "bed." In 2
   Kings 1:4; 16:2; Ps. 132:3; Amos 3:12, the divan is meant by
   this word.