'launchpad' definitions:

Definition of 'launchpad'

From: WordNet
noun
A platform from which rockets or space craft are launched [syn: launching pad, launchpad, launch pad, launch area, pad]

Definition of 'launchpad'

From: GCIDE
  • launchpad \launchpad\ n. (Rocketry) a platform from which rockets or space craft are launched.
  • Syn: launching pad, launch pad, launch area, pad. [WordNet 1.5]