booster rocket(n = noun.artifact) booster, booster unit, takeoff booster, takeoff rocket - the first stage of a multistage rocket;
is a kind of rocket, rocket engine
is a part of multistage rocket, step rocket

anti-submarine rocket, booster, booster amplifier, booster cable, booster dose, booster shot, booster station, booster unit, congreve rocket, dyer's rocket, garden rocket, morale booster, multistage rocket, nuclear rocket, prairie rocket, research rocket, retro rocket, rocket, rocket base, rocket cress, rocket engine, rocket engineer, rocket firing, rocket fuel, rocket larkspur, rocket launcher, rocket launching, rocket power, rocket propellant, rocket propellent, rocket propulsion, rocket range, rocket salad, rocket scientist, sea rocket, sounding rocket, space rocket, step rocket, sweet rocket, takeoff booster, takeoff rocket, tansy-leaved rocket, test rocket, wall rocket, water rocket, white rocket, yellow rocket