English Dictionary
Definition booster in British English
booster noun
[countable] noun
/ˈbuːstə(r)/
Example
A new haircut can be a great confidence booster.
2
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
3
an extra engine on a spacecraft that gives it enough power to leave the Earth's atmosphere
