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.)
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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