Rack rail

Definition of Rack rail

(Railroads) a toothed rack, laid as a rail, to afford a hold for teeth on the driving wheel of a locomotive for climbing steep gradients, as in ascending a mountain.

See also: Rack

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Racemulose
Racer
Rach
Rachialgia
Rachidian
Rachilla
Rachiodont
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Racing
Racing crab
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-Rack rail-
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Rack-rent
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Rackabones
Rackarock
Racker
Racket
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Racket-tail
Racket-tailed
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Racking
Racktail
Rackwork
Racle
Racleness
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