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Meaning of double-barreled

dou•ble-bar•reled

Pronunciation: (dub'ul bar'uld), [key]
— adj.
  1. having two barrels mounted side by side, as a shotgun.
  2. serving a double purpose or having two parts or aspects: a double-barreled attack on corruption.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.