Laxi Dictionary

American Dictionary

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Definition booster in American English

booster noun

[countable] noun
/ˈbustər/
1

a small extra amount of a medical drug that you are given so that a drug you had before will continue to be effective

Example

a tetanus booster

Synonyms and related words
amphetamine anabolic steroid anaesthetic
2

something that makes you feel more confident, more healthy, etc.

Example

Fruit is an excellent health booster.

Example

A new haircut can be a great confidence booster.

Synonyms and related words
advantage benefit good
3

an extra engine on a spacecraft that gives it enough power to leave the Earth's atmosphere

Synonyms and related words
aerospace Apollo astronaut
4

someone who publicly supports a person, plan, or organization

Example

The new airport, say its boosters, would do a lot for the local economy.

Synonyms and related words
supporter follower advocate
Definition booster in American English