Bombination

The Century Dictionary and Cyclopedia
  • noun. Buzz; humming noise.
    • the GNU version of the Collaborative International Dictionary of English
  • noun. A humming or buzzing.
    • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. the act or sound of humming or buzzing; hum, buzz
    • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. sound of rapid vibration
    • Word Usage
    "Whenever he sees that the attention of his audience is flagging he introduces an interlude of "bombination," which renders lethargy impossible and exercises an indescribably stimulating effect on the tympanum."
    Hypernym
    Words that are more generic or abstract
    sound  
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