- Pertaining to or characterized by, boasting and pretension;
used by quacks; pretending to cure diseases; as, a quack medicine; a
quack doctor.
2 . Quack
[ n.]
- The cry of the duck, or a sound in imitation of it; a
hoarse, quacking noise. - A boastful pretender to medical skill; an empiric; an
ignorant practitioner. - Hence, one who boastfully pretends to skill or knowledge of
any kind not possessed; a charlatan.
3 . Quack
[ v. i.]
- To utter a sound like the cry of a duck. - To make vain and loud pretensions; to boast. - To act the part of a quack, or pretender.