bed ‧ rid ‧ den /ˈbedˌrɪdn/ BrE AmE adjective
[ Date: 1300-1400 ; Language: Old English ; Origin: bedreda 'person who has to stay in bed' , from bedd 'bed' + -rida , -reda 'rider' ]
unable to leave your bed, especially because you are old or ill
bed ‧ rid ‧ den /ˈbedˌrɪdn/ BrE AmE adjective
[ Date: 1300-1400 ; Language: Old English ; Origin: bedreda 'person who has to stay in bed' , from bedd 'bed' + -rida , -reda 'rider' ]
unable to leave your bed, especially because you are old or ill
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012