1. [syn: bus, autobus, coach, charabanc, double-decker, jitney, motorbus, motorcoach, omnibus, passenger vehicle]
The Collaborative International Dictionary of English v.0.48:
Double-decker \Dou"ble-deck"er\, n.
1. A man-of-war having two gun decks.
(a) A tenement house having two families on each floor.
[Local, U. S.]
(b) A biplane a["e]roplane or kite. [Colloq.]
[Webster 1913 Suppl.]
3. anything having two decks or levels, as a bus with two
levels for passengers. In older vehicles, less often
today, the upper deck was open, as on street cars.
WordNet (r) 3.0 (2006):
n 1: a vehicle carrying many passengers; used for public
transport; "he always rode the bus to work" [syn: bus,
autobus, coach, charabanc, double-decker, jitney,
motorbus, motorcoach, omnibus, passenger vehicle]