1. The first stage of a multistage rocket
   - booster, booster rocket, booster unit, takeoff booster

Derived forms: takeoff rockets

Type of: rocket, rocket engine

Part of: multistage rocket, step rocket

• spikemoss
• spikenard
• spiky
• spile
• spill
• spill out
• spill the beans
• spillage
• Spillane
• spiller
• spillikin
• spillikins
• spillover
• spillway
• Spilogale
• Spilogale putorius
• spilth
• spin
• spin around
• spin bowler
• spin doctor
• spin drier
• spin dryer
• spin out
• spin the bottle