death·bed 
/ˈdɛθˌbɛd/ noun
plural death·beds /ˈdɛθˌbɛd/ noun Meaning:
on your deathbed
: in the bed that you will soon die in
▪ She made a startling confession on her deathbed. [=just before she died] — often used figuratively to say that someone is very close to dying or very sick ▪ She's convinced that the old man is on his deathbed, but he looks healthy enough to me. ▪ I was so sick with the flu—practically on my deathbed.
▪ She made a startling confession on her deathbed. [=just before she died] — often used figuratively to say that someone is very close to dying or very sick ▪ She's convinced that the old man is on his deathbed, but he looks healthy enough to me. ▪ I was so sick with the flu—practically on my deathbed.
— deathbed adjective always used before a noun
▪ a deathbed confession [=a confession made just before someone dies]
▪ a deathbed confession [=a confession made just before someone dies]
