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.
One whose activities make use of the scientific method to answer questions regarding the measurable universe. A scientist may be involved in original research, or make use of the results of the research of others.