In aeronautics a booster refers to a missile or rocket which is used to launch a payload into space.

A person who whole-heartedly supports a team or an issue. A fan, even a fanatic or zealot.

To Iceberg Slim and his contemporaries, this was jivespeak, to refer to a shoplifter.

In medicine, a dose of vaccine to enhance or sustain the immune effect of an initial innoculation.

Boost"er (?), n. (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.

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