Definition of booster
: one that boosts: as a : an enthusiastic supporter b : an auxiliary device for increasing force, power, pressure, or effectiveness c slang : shoplifter d : a radio-frequency amplifier for a radio or television receiving set e : the first stage of a multistage rocket providing thrust for the launching and the initial part of the flight f : a substance that increases the effectiveness of a medicament; especially : booster shot
Examples of booster
These exercises are real metabolism boosters.
Music is my favorite mood booster.
A sincere compliment can be a true confidence booster.
The university has a number of wealthy boosters who contribute generously each year.
a new design for rocket boosters
First Known Use of booster
Seen and Heard
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