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| boost·er [ bstər ] (plural boost·ers) |
noun |
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| Definition: |
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1. vigorous promoter of something or somebody: an enthusiastic promoter or supporter of something or somebody, e.g. of a team
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2. somebody or something that causes improvement: somebody or something that improves, strengthens, or encourages somebody or something
(
usually used in combination
)
  a morale-booster
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3. electronics radio-frequency amplifier: a radio-frequency amplifier that amplifies weak television or radio signals and retransmits them so that they can be received by viewers or listeners
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4. aerospace
Same as booster rocket
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5. technology device that makes something more effective: a device used to increase the effectiveness of a piece of equipment
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6. immunology supplementary dose of vaccine: a repeat dose of a vaccine given some time after the initial course to maintain the level of immunity provided by the previous dose
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7. shoplifter: somebody who engages in shoplifting
(
slang
)
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