adjective. A dog whistle is inaudible to the human ear. A dog whistle is inaudible to the human ear. The definition of inaudible is something that can't be heard.An example of something inaudible is a dog whistle to a human.not audible; that cannot be heard or be distinctly heard.djective. A dog whistle is inaudible to the human ear. A dog whistle is inaudible to the human ear. The definition of inaudible is something that can't be heard.