rack and pinion 1
noundomain: artefact
Princeton WordNet [ver.3.1]
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EnglishDefinition
a wheel gear (the pinion) meshes with a toothed rack; converts rotary to reciprocating motion (and vice versa)
Hypernym
gear 1
noun
a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
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