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(), v. i.[imp. & p. p.Qvacked (); p. pr. & vb. n.Quacking.] [Of imitative origin; cf. D. kwaken, G. quacken, quaken, Icel. kvaka to twitter.] 1. To utter a sound like the cry of a duck. 2. To make vain and loud pretensions; to boast. " To quack of universal cures." Hudibras. 3. To act the part of a quack, or pretender. Quack n. 1. The cry of the duck, or a sound in imitation of it; a hoarse, quacking noise. Chaucer. 2. [Cf. Quacksalver.] A boastful pretender to medical skill; an empiric; an ignorant practitioner. 3. Hence, one who boastfully pretends to skill or knowledge of any kind not possessed; a charlatan. Quacks political; quacks scientific, academical. Carlyle. Quack a.Pertaining to or characterized by, boasting and pretension; used by quacks; pretending to cure diseases; as, a quack medicine; a quack doctor. スポンサード リンク
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