The forefinger.
One who demonstrates anything, or proves beyond doubt.
An item, particularly a vehicle, used in demonstrations to a customer or user.
An assistant to a lecturer.
One who demonstrates products in a retail environment; a merchandiser.
One who teaches anatomy from the dissected parts.
One who takes part in a demonstration; a protester.
The most senior rank for an academic at a university or similar institution, informally also known as "full professor."
A teacher or faculty member at a college or university regardless of formal rank.
A pianist in a saloon, brothel, etc.
The puppeteer who performs a Punch and Judy show; a Punchman.