catcall

noun

1. a shrill, whistlelike sound or loud raucous shout made to express disapproval at a theater, meeting, etc.
2. an instrument for producing such a sound.

verb (used without object)

3. to sound catcalls.

verb (used with object)

4. to express disapproval of by catcalls.

noun

1. a shrill whistle or cry expressing disapproval, as at a public meeting, etc

verb

2. to utter such a call (at); deride with catcalls

n.

1650s, a type of noisemaker used to express dissatisfaction in play-houses, from cat (n.) + call (n.); presumably because it sounded like an angry cat. As a verb, attested from 1734.