Definition of "concussing" []

• Present participle of concuss. (verb)

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• "In addition to the 4-inch dual exhausts concussing out the back, Ford has added a couple of small exhaust pipes with resonators that exit just ahead of the rear wheel arches Ford says it also deleted several pounds of sound-deadening material."
• "Ford The Boss has 4-inch dual exhausts concussing out the back."
• "Probably the most neck-snapping, brain-concussing, ill-advised one on here."