A man bedfast with a fever.
bedridden definition by Webster's New World
Origin: Middle English bedrede(n) ; from Old English bedreda ; from bed, bed plush rida, rider ; from ridan, to ride
bedridden definition by American Heritage Dictionary
Origin: Middle English bedreden, from Old English bedrida : bed, bed; see bed + rida, rider (from rīdan, to ride; see ride).
bedridden - Medical Definition