- The sound made by a duck.
- Did you hear that duck make a ?
- A fraudulent or incompetent doctor of medicine, an impostor who claims to have qualifications to practice medicine.
- That doctor is nothing but a lousy !
- A charlatan.
- (slang) A doctor.
- To make a noise like a duck.
- The more breadcrumbs I threw on the ground, the more they quacked.
- Do you hear the ducks ?
- falsely presented as having medicinal powers.
- Don't get your hopes up; that's medicine!