From The Collaborative International Dictionary of English v.0.48 :
Tintinnabulation \Tin`tin*nab`u*la"tion\, n.
A tinkling sound, as of a bell or bells. --Poe.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
tintinnabulation
n 1: the sound of a bell ringing; "the distinctive ring of the
church bell"; "the ringing of the telephone"; "the
tintinnabulation that so voluminously swells from the
ringing and the dinging of the bells"--E. A. Poe [syn:
ring, ringing, tintinnabulation]