Mountebank

1. One who mounts a bench or stage in the market or other public place, boasts of his skill in curing diseases, and vends medicines which he pretends are infalliable remedies; a quack doctor.
2. Any boastful or false pretender; a charlatan; a quack.
3. To cheat by boasting and false pretenses; to gull.
4. To play the mountebank.