Dictionary
dou•ble-deck
Pronunciation: (dub'ul-dek'), [key]—
adj.
Also,dou'ble-decked'.having two decks, tiers, or levels:
a double-deck bunk; a double-deck bus.
—
v.t.
to add a second deck to (a bridge) or a second level to (a road).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.