booster
/ˈbustər/
noun
- A person or thing that supports, promotes, or increases something, such as a cause, product, or team.
- She is a big booster of the local library.
- The company hired a celebrity booster to promote its new drink.
- Fans are the best boosters for any sports team.
- An extra dose of a vaccine given to maintain or increase immunity.
- The doctor recommended a tetanus booster every ten years.
- The booster helped strengthen her protection against the flu.
- Many people got a COVID-19 booster shot in the fall.
- A device that increases power, force, or signal strength, such as in electronics or rockets.
- A brake booster makes it easier to stop the car.
- The rocket's booster separated after launch.
- We installed a Wi-Fi booster to get a better signal in the basement.
- A person who gives a boost or lift, especially to help someone reach a higher place.
- He acted as a booster so she could climb over the fence.
- The child needed a booster to reach the sink.
- She gave him a booster up onto the horse.