clangor

from WordNet (r) 3.0 (2006)

clangor
    n 1: a loud resonant repeating noise; "he could hear the clang
         of distant bells" [syn: {clang}, {clangor}, {clangour},
         {clangoring}, {clank}, {clash}, {crash}]
    v 1: make a loud resonant noise; "the alarm clangored throughout
         the building" [syn: {clangor}, {clangour}]
    2: make a loud noise; "clanging metal" [syn: {clang}, {clangor}]

from The Collaborative International Dictionary of English v.0.48

Clangor \Clan"gor\ (kl[a^][ng]"g[~e]r), n. [L., fr. clangere.
   See {Clang}, v. t.]
   A sharp, harsh, ringing sound. --Dryden.
   [1913 Webster]