/ ˈdeθbed; NAmE / noun
[ usually sing. ] the bed in which sb is dying or dies :
a deathbed confession / conversion
He told me the truth on his deathbed (= as he lay dying) .
She was on her deathbed (= going to die very soon) .
( humorous )
You'd have to be practically on your deathbed before the doctor would come and see you!