plural boosters
plural boosters
Learner's definition of BOOSTER
[count]
1
: something that boosts someone or something: such as促进物;推动力
a : an action or substance that makes something stronger or more effective(起加强或推动作用的)推动力,增效剂 b : something that helps or encourages someone or something起促进或激励作用的事物 2
US : someone who supports an idea or organization支持者 3
: part of a rocket that provides force for the launch and the first part of the flight火箭助推器