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   booster

   /ˈbuːstə/

   noun

   • 1. a device for increasing electrical voltage or signal strength.
   • 2. the first stage of a rocket or spacecraft, used to give initial acceleration and then jettisoned.
   • 3. a dose of a vaccine that increases or renews the effect of an earlier one: "boosters at five-year intervals are recommended"
   • 4. a source of help or encouragement: "job fairs are a great morale booster"
   • ▪ a keen promoter of a person, organization, or cause. North American
   • 5. a shoplifter. informal North American

   Scrabble Points: 9

   • B

     3

   • O

     1

   • O

     1

   • S

     1

   • T

     1

   • E

     1

   • R

     1

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