: one that speeds: such as
a
: any of various devices (such as an attachment to a governor) for regulating the speed of a machine or part
b
or less commonly speed frame
: a machine for drawing and twisting slivers to form rovings
c
: a small light usually gasoline-operated vehicle with flanged wheels or solid rubber tires for operation on railroad tracks
spent the next four days riding freight trains and gas speeders up and down the main line—
H. L. Davis
d
: one who drives too fast or who exceeds the legal speed limit
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Merriam-Webster unabridged
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