Meaning of bubbletop

bub•ble•top

Pronunciation: (bub'ul-top"), [key]
— n.
  1. a transparent dome, usually made of plastic or bulletproof glass, that serves as the roof or part of the roof of an automotive vehicle.
  2. a vehicle having such a dome: The old van was converted into a bubbletop.
—adj.
  1. fitted with such a dome: a bubbletop limousine.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.