bombination

from WordNet (r) 3.0 (2006)
bombination
    n 1: sound of rapid vibration; "the buzz of a bumble bee" [syn:
         {buzz}, {bombilation}, {bombination}]
from The Collaborative International Dictionary of English v.0.48
Bombination \Bom`bi*na"tion\, n.
   A humming or buzzing.
   [1913 Webster]
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