(derogatory) A fraudulent healer, especially a bombastic peddler in worthless treatments, a doctor who makes false diagnoses for monetary benefit, or an untrained or poorly trained doctor who uses fraudulent credentials to attract patients
(figuratively, derogatory) Any similar charlatan or incompetent professional.
(humorous slang, mildly derogatory) Any doctor.
The sound made by a duck.
verb
(intransitive) Of a queen bee: to make a high-pitched sound during certain stages of development.
(obsolete) To make vain and loud pretensions.
To make a noise like a duck.
To practice or commit quackery (fraudulent medicine).
