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Noun booster has 5 senses
  1. supporter, protagonist, champion, admirer, booster, friend - a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library"
    --1 is a kind of advocate, advocator, proponent, exponent
    --1 has particulars:
     anglophile, anglophil; believer, truster; Boswell; cheerleader; Confederate; enthusiast, partisan, partizan; Francophile, Francophil; free trader; functionalist; Jacobite; loyalist, stalwart; New Dealer; philhellene, philhellenist, Graecophile; pillar, mainstay; Roundhead; seconder; Shavian; subscriber, endorser, indorser, ratifier; sympathizer, sympathiser, well-wisher; toaster, wassailer; upholder, maintainer, sustainer; voucher, verifier; Whig
    Derived form: verb boost3
  2. promoter, booster, plugger - someone who is an active supporter and advocate
    --2 is a kind of advertiser, advertizer, adman
    --2 has particulars: barker
    Derived form: verb boost3
  3. booster, shoplifter, lifter - a thief who steals goods that are in a store
    --3 is a kind of thief, stealer
  4. booster, booster rocket, booster unit, multistage rocket, takeoff booster, takeoff rocket - the first stage of a multistage rocket
    --4 is a kind of rocket, rocket engine
    Derived form: verb boost5
  5. booster, booster dose, booster shot, recall dose - an additional dose that makes sure the first dose was effective
    --5 is a kind of dose
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