bedridden

from WordNet (r) 3.0 (2006)

bedridden
    adj 1: confined to bed (by illness) [syn: {bedfast},
           {bedridden}, {bedrid}, {sick-abed}]

from The Collaborative International Dictionary of English v.0.48

Bedrid \Bed"rid`\, Bedridden \Bed"rid`den\, a. [OE. bedrede, AS.
   bedreda, bedrida; from bed, bedd, a bed or couch + ridda a
   rider; cf. OHG. pettiriso, G. bettrise. See {Bed}, n., and
   {Ride}, v. i. ]
   Confined to the bed by sickness or infirmity. "Her decrepit,
   sick, and bedrid father." --Shak. "The estate of a bedridden
   old gentleman." --Macaulay.
   [1913 Webster] Bedright