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.
The slope of the terrain, shaped like a funnel, squeezed the growing swell of churning snow into a steep, twisting gorge. ( 1 intransitive) To move rapidly and repetitively with a rocking motion; to tumble, mix or shake.