A common name for the derigableairship which has been assimilated into the English language. Like "Kleenex," many people use it despite the fact that it is a trademark of the Zeppelin Company.
A Zeppelin, in more correct terminology, is a Rigid Arship, or Derigable. Made famous by the giant Zeppelins of Germany in the 1920's and 30's, and the Hindenburg which crashed.
The whales of the sky! The high flying mobilized balloon. Big, but impractical for production and militaristic use. Used for advertising during sports games.