[1] : The Collaborative International Dictionary of English v.0.48

booster \boost"er\ b=oost"~er, n.
   1. elec. an instrument for regulating the electro-motive
      force in an alternating-current circuit; -- so called
      because used to "boost", or raise, the pressure in the
      circuit.
      webster 1913 suppl.

   2. an enthusiastic supporter.
      pjc

   3. the first stage of a multistage rocket, providing all or
      part of the driving force at lift-off and until the second
      stage ignites, whether or not the booster stage is
      detached after the fuel is spent. also called booster
      rocket. in some cases, a booster has been used to assist
      the takeoff of airplanes.
      pjc

   4. med. an immunizing medication given after an initial
      immunizing treatment, to provide increased or extended
      immunity. also called booster dose. when in the form of
      an injection, it may be called a booster shot.
      pjc

   5. any auxiliary device or part of a device to provide
      increased power, force, or effectiveness, as with a
      pumping device.
      pjc

   6. mil. an explosive charge which is more powerful than a
      primer, used in conjunction with a primer to assure
      detonation of the main charge. integrated blasting caps
      containing separate compartments for primer and booster
      are used as detonators for certain explosives.
      pjc
see also:
booster rocket booster dose booster shot 

[2] : WordNet (r) 2.0

booster
     n 1: a person who backs a politician or a team etc.; "all their
          supporters came out for the game"; "they are friends of
          the library" syn: supporter, protagonist, champion,
           admirer, friend
     2: someone who is an active supporter and advocate syn: promoter,
         plugger
     3: a thief who steals goods that are in a store syn: shoplifter,
         lifter
     4: the first stage of a multistage rocket syn: booster rocket,
         booster unit, multistage rocket, takeoff booster, takeoff
        rocket
     5: an additional dose that makes sure the first dose was
        effective syn: booster dose, booster shot, recall
        dose
see also:
supporter protagonist champion admirer friend promoter 
plugger shoplifter lifter booster rocket booster unit 
multistage rocket takeoff booster takeoff rocket booster dose booster shot 
recall dose 

[3] : Moby Thesaurus II by Grady Ward, 1.0

112 moby thesaurus words for "booster":
   comsat, intelsat, syncom, telstar, adherent, admirer, amateur,
   antitoxin, applauder, appreciator, bag, bang, blind, body snatcher,
   bonnet, booster amplifiers, booster dose, booster rocket,
   booster shot, boosters, buff, capper, chicken thief, claqueur,
   collector, commender, communication satellite, con man, crook,
   deck, den of thieves, devotee, dilettante, dose, draft, dropping,
   drug packet, embezzler, encomiast, eulogist, eulogizer, extoller,
   fan, fancier, filcher, fix, follower, ganef, ghoul, grafter,
   grave robber, groupie, hit, hypodermic, hypodermic injection,
   idolater, idolizer, injection, inoculation, jet injection,
   jewel thief, land pirate, land shark, land-grabber, larcener,
   larcenist, lauder, lifter, mainlining, multistage rocket,
   narcotic injection, narcotic shot, overdose, panegyrist, peculator,
   petty thief, pilferer, plugger, poacher, popping, portion, potion,
   praiser, promoter, prowler, puffer, purloiner, relay links, robber,
   rooter, scrounger, shill, shooting up, shoplifter, shot,
   single-stage rocket, skin-popping, sneak thief, stealer,
   step rocket, stick, stratovision, swindler, thief,
   three-stage rocket, tout, touter, vaccination, vaccine, votary,
   white-collar thief, worshiper

[4] : The Free On-line Dictionary of Computing (27 SEP 03)

booster
     
        a data-parallel language.
     
        "the booster language", e. paalvast, tr pl 89-iti-b-18, inst
        voor toegepaste informatica tno, delft, 1989.
     
     
see also:
data-parallel 

Booster >> B Words
Booster, definition of term: Booster
booster_pag1.html

Booster Shot >> B Words
Booster Shot, definition of term: Booster Shot
booster+shot_pag1.html