The Collaborative International Dictionary of English v.0.48:

Bedstaff \Bed"staff`\, n.; pl. Bedstaves.
   "A wooden pin stuck anciently on the sides of the bedstead,
   to hold the clothes from slipping on either side." --Johnson.
   [1913 Webster]

         Hostess, accommodate us with a bedstaff. --B. Jonson.
   [1913 Webster]

         Say there is no virtue in cudgels and bedstaves.
                                                  --Brome.
   [1913 Webster]