• A whistling noise sometimes made by theater audiences, etc.,to express impatience or displeasure.
    I was very much surprised with the great consort of cat-calls...tosee so many persons of quality of both sexes assembled together ina kind of caterwauling.
    Joseph Addison: The Spectator

    Members of the audience would often equip themselves withpipes or whistles designed specifically to produce such a noise. Inhis Diary of 1660 Samuel Pepys recalls buying such an instrumentfor two groats.