NOUN (1)

1. a cry expressing disapproval;


VERB (1)

1. utter catcalls at;

The Collaborative International Dictionary of English v.0.48:

Catcall \Cat"call`\, n.
   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.
   [1913 Webster]

         Upon the rising of the curtain. I was very much
         surprised with the great consort of catcalls which was
         exhibited.                               --Addison.
   [1913 Webster]

WordNet (r) 3.0 (2006):

catcall
    n 1: a cry expressing disapproval
    v 1: utter catcalls at

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "catcall":
   Bronx, Bronx cheer, Klaxon, bird, boiler factory, boiler room, boo,
   booing, bull-roarer, cherry bomb, clack, clacker, clapper, cracker,
   cricket, firecracker, give the bird, give the raspberry, hiss,
   hissing, hoot, horn, noisemaker, raspberry, rattle, rattlebox,
   razz, siren, snapper, steam whistle, the bird, ticktack, whistle,
   whistle at, whizgig, whizzer