couacs / quacks / quax [kwæks]
couacs – n.pl. – strident tones produced by reed instruments when the reed is damaged or the player incompetent
quacks – n. & v. – n.pl. 1. incompetent medical practitioners; 2. duck sounds; 3. idle chatter; v. 3rd pres. sing of quack – make a sound like a duck
quax – v. – drink copiously, or drain a drinking vessel in one prolonged drink