to have one foot in the (also his,etc.) grave: to be near death through old age or illness.

intransitive. To be close to death, to be dying. Obsolete.

to gasp up the ghost and variants: = to give up the ghost at ghost, n. adj.phrases 1a; to die. Obsolete.

intransitive. To lie soaking in blood.

to turn one's face to the wall: said of a person on his deathbed conscious of the approach of the end (?after 2 Kings 20:2, Isaiah 38:2).

to gasp one's last: to die; also figurative; cf. gasp, n. phrases, to breathe one's last at breathe, v. phrases 1.

quasi-transitive. To breathe (one's life, soul) away or out in groaning. Similarly, to groan one's heart out.

not to be long for this world and variants: to have only a short time to live. Also in extended use.

To make violent efforts to breathe (usually, to struggle for breath); to be in the agony of death. Also (nonce-use) to pass out of (the world) with…

to falter forthor out: to utter hesitatingly or with difficulty; to stammer forth. Also (poetic), To breathe out (the soul) by gasps.

With complement: to sprawl one's last, to make a last convulsive struggle in death.