BOOSTER


Meaning of BOOSTER in English

boost ‧ er /ˈbuːstə $ -ər/ BrE AmE noun [countable]

1 . a small quantity of a drug that increases the effect of one that was given before, so that someone continues to be protected against a disease:

a booster shot

2 . something that helps someone or something to increase or improve, or to be more successful or confident:

a booster pump

a profit booster for the company

morale/confidence booster

Mail from home is a big morale booster for faraway troops.

3 . a rocket that is used to provide extra power for a ↑ spacecraft to leave the Earth:

a giant booster rocket

4 . American English someone who gives a lot of support to a person, organization, or idea:

a dance organized by the school’s booster club

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.