Wiktionary
n. A stupid person.
Usage examples of "dumb cluck".
And like every dumb cluck of a man, his ego won't allow him to take it quietly.
This Greek had had a fracture of the skull, and a thing like that don't happen to a dumb cluck like him every day.
I know the underground railway is really not a train but a way for decent people like you and your family to trick dumb cluck white trash like Billy Cramer in Troy .
You must think me a poor dumb cluck not to have put all this together myself.
The dumb cluck was opening the cartridge box and exposing the film to the light!
Afterward he would demand of me why a clean-cut young fellow with everything in his favour would wreck his chances by marrying a girl who was obviously a dumb cluck and would simply hold him back from real success in the corporation?