launch pad 
(also launching pad)
noun
The area on which a rocket stands for launching, typically consisting of a platform with a supporting structure: figurative the small gallery has been a launch pad for many artists...
- The camera will be turned on fifteen minutes prior to launch and will show the orbiter and solid rocket boosters on the launch pad.
- What is an astronaut feeling as he's sitting on the rocket launch pad strapped into his pod at the brink of takeoff?
- These use a 1: 20 scale model of Vega and its launch pad to simulate conditions at liftoff.
- have nerves of steel
- havenless
- haven master
- haven mouth
- have no business
- have no concern with
- havenor
- have-not
- have-nothing
- have nothing on someone
- have nothing to do with
- have nothing to lose
- have no time for
- have-nots
- have no use for
- haven't
- haven town
- havenward
- have-on
- have one foot in the grave
- have one over the eight
- have one's day in court
- have one's hands full
- have one's hands tied
- have one's head screwed on (the right way)