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Meaning of business end

busi'ness end"

Pronunciation: [key]
  1. the front part or end of a tool, weapon, etc., with which the work is done or from which a missile is ejected, as opposed to the handle or butt: the business end of a revolver; the business end of a screwdriver.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.