noun

booster

Translation

booster, supporter, booster jab, amplifier

The rocket has a powerful booster.

He is a big booster of the local team.

I need to get my flu booster shot.

I need to get my flu booster jab.

a booster ((of sth.)) a supporter of something. He is a booster of the arts.

a booster ((shot/jab)) an extra dose of a vaccine. She got her tetanus booster.

Synonyms: supporter, promoter, amplifier, supplement

From the verb 'boost' + the agent suffix '-er'. Literally, 'something that boosts'.

A 'booster' is a person or thing that gives a 'boost' – a booster rocket, a booster jab, a team booster.