The Collaborative International Dictionary of English v.0.48:

Caterwaul \Cat"er*waul\, v. i. [imp. & p. p. Caterwauled; p.
   pr. & vb. n. Caterwauling.] [Cat + waul, wawl, to cry as a
   cat.]
   To cry as cats in rutting time; to make a harsh, offensive
   noise. --Coleridge.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Caterwaul \Cat"er*waul\, n.
   A caterwauling.
   [1913 Webster]

WordNet (r) 3.0 (2006):

caterwaul
    n 1: the yowling sound made by a cat in heat
    v 1: utter shrieks, as of cats [syn: yowl, caterwaul]

Moby Thesaurus II by Grady Ward, 1.0:

78 Moby Thesaurus words for "caterwaul":
   bark, battle cry, bawl, bay, bell, bellow, bicker, blare, blat,
   blate, bleat, bray, call, cheer, creak, cry, fall out, give tongue,
   give voice, hail, halloo, holler, hollo, hoot, howl, hurrah, keen,
   low, meow, mew, mewl, miaow, moo, neigh, nicker, pipe, pule,
   rallying cry, roar, row, scrap, screak, scream, screech, shout,
   shriek, shrill, skirl, skreigh, spat, squabble, squall, squawk,
   squeak, squeal, tiff, troat, ululate, ululation, wail, war cry,
   war whoop, whicker, whine, whinny, whistle, whoop, wrangle, wrawl,
   yammer, yap, yawl, yawp, yell, yelp, yip, yo-ho, yowl