Have one foot in the grave

What is Have one foot in the grave?

Have one foot in the grave definition and meaning on Dictionary terms:
an excavation made in the earth in which to bury a dead body.
any place of interment; a tomb or sepulcher: a watery grave.
any place that becomes the receptacle of what is dead, lost, or past: the grave of unfulfilled ambitions.
death: O grave, where is thy victory?


reference: https://www.dictionary.com/browse/have–one–foot–in–the–grave