Meaning of the word booster in English

What does booster mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

booster

US /ˈbuː.stɚ/

UK /ˈbuː.stɚ/

a device for increasing power or effectiveness

Example:

•

The car has a brake booster for improved stopping power.

•

They installed a signal booster to improve cell phone reception.

Synonym:

amplifier enhancer augmenter reinforcer stimulator

a supplementary dose of a vaccine given to maintain or renew the effectiveness of a previous vaccination

Example:

•

She received a booster shot for tetanus.

•

Many countries are recommending a third booster dose for COVID-19.

Synonym:

reinforcement supplement top-up refresher

a person or thing that helps to improve or promote something

Example:

•

The new marketing campaign was a big booster for sales.

•

He's a strong booster of local businesses.

Synonym:

supporter promoter advocate champion patron

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Related Word:

booster seat