bombilation

CIDE DICTIONARY

bombilation, n. 

 A humming sound; a booming.  [1913 Webster]
"To . . . silence the bombilation of guns."  [1913 Webster]

ROGET THESAURUS

bombilation

Loudness

N loudness, power, loud noise, din, blare, clang, clangor, clatter, noise, bombilation, roar, uproar, racket, hubbub, bobbery, fracas, charivari, trumpet blast, flourish of trumpets, fanfare, tintamarre, peal, swell, blast, larum, boom, bang (explosion), resonance, vociferation, hullabaloo, lungs, Stentor, artillery, cannon, thunder, loud, sonorous, high-sounding, big-sounding, deep, full, powerful, noisy, blatant, clangorous, multisonous, thundering, deafening, trumpet-tongued, ear-splitting, ear-rending, ear-deafening, piercing, obstreperous, rackety, uproarious, enough to wake the dead, enough to wake seven sleepers, shrill &c 410 clamorous stentorian, stentorophonic, loudly, aloud, at the top of one's voice, at the top of one's lungs, lustily, in full cry, the air rings with, the deep dread-bolted thunder.