A sound like the cry of a cat, such as is made in playhouses to express dissatisfaction with a play; also, a small shrill instrument for making such a noise
Catcalls are loud noises that people make to show that they disapprove of something they are watching or listening to. The crowd responded with boos and catcalls. = jeer cheer. a loud whistle or shout expressing disapproval of a speech or performance
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