what does croaker mean?

Question

i'm doing an analysis of a short story and the character was described as a "CROAKER", what does it mean?

Answer 1

Definition: \Croak"er\ (-?r), n.
1. One who croaks, murmurs, grumbles, or complains
unreasonably; one who habitually forebodes evil.

2. (Zo["o]l.)
(a) A small American fish ({Micropogon undulatus}), of the
Atlantic coast.
(a) An American fresh-water fish ({Aplodinotus
grunniens}); -- called also {drum}.
(c) The surf fish of California.

Note: When caught these fishes make a croaking sound; whence
the name, which is often corrupted into crocus.