the bed in which sb is dying or dies 临终床
a deathbed confession/conversion
临终告解／皈依
He told me the truth on his deathbed (= as he lay dying).
他临终时向我吐露了实情。
She was on her deathbed (= going to die very soon).
她已生命垂危。
humorous
You’d have to be practically on your deathbed before the doctor would come and see you!
你非病到就要一命呜呼的时候医生才会来看你！