Noun: booster rocket 'boos-tu(r) 'ró-kit
- The first stage of a multistage rocket that provides initial thrust
"The booster rocket separated from the spacecraft after reaching the upper atmosphere";
- booster, booster unit, takeoff booster, takeoff rocket
Derived forms: booster rockets
Type of: rocket, rocket engine
Part of: multistage rocket, step rocket
Encyclopedia: Booster rocket