a dishonest person who tricks and deceives people (montimbanco, from monta in banco ; because people selling things to the public stood on a raised surface)
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 infallible remedies; a quack doctor
{i} charlatan, impostor; person who sells counterfeit drugs from a public place, one who pretends to be a doctor giving phony medical advice