Source : Webster's Revised Unabridged Dictionary (1913)

Bedchamber \Bed"cham`ber\, n.
   A chamber for a bed; an apartment form sleeping in. --Shak.

   {Lords of the bedchamber}, eight officers of the royal
      household, all of noble families, who wait in turn a week
      each. [Eng.]

   {Ladies of the bedchamber}, eight ladies, all titled, holding
      a similar official position in the royal household, during
      the reign of a queen. [Eng.]