Definition of launchpad. : a nonflammable platform from which a rocket, launch vehicle, or guided missile can be launched.
Terrain is defined as the specific physical features of an area of land. An example of terrain is a rocky and jagged coastline. ground or a tract of ground, esp. with regard to its natural or topographical features or fitness for some use.
Definition of ridge for English Language Learners. : 1  a long area of land that is on top of a mountain or hill. : 2  a raised part or area on the surface of something. : 3  the place where two sloping surfaces meet.