Definition of deathbed noun from the Oxford Advanced Learner's Dictionary

 

deathbed

 noun
noun
BrE BrE//ˈdeθbed//
 
; NAmE NAmE//ˈdeθbed//
 
[usually singular]
 
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the bed in which somebody 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!
See the Oxford Advanced American Dictionary entry: deathbed