Croaker

a beggar.
a dying person beyond hope; a corpse. The latter is generally called a “stiff'un.”
Croaker.—A character in Goldsmith's comedy, The Good-Natured Man.
One who is always foretelling some accident or misfortune: an allusion to the croaking of a raven, supposed ominous.
one who takes a desponding view of everything, a misanthrope; an alarmist. From the croaking of a raven.—Ben Jonson.