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bang away

1

Strike repeatedly, as in Mary is always banging away on the piano, or The doorbell must be broken; see who is banging away at the door. [First half of 1800s] Also see bang out.

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2

Go ahead; begin or continue. This slangy imperative usually calls merely for energetic action, as in You can start without me—bang away. Also see go to (it), def. 3.

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.