0 the sound made by a duck (= a water bird) -- qua qua (verso dell’anatra)
1 to make the noise of a duck (= a water bird) -- fare qua qua
3 to make such a sound -- fare qua qua*
4 a person who dishonestly claims to have medical qualifications -- ciarlatano
quack medicine/cures.
(also adjective) a quack doctor/psychologist
5 a doctor -- dottore, medico