rack and pinion

== English == === Noun === rack and pinion (plural rack and pinions or racks and pinions) A pair of gears, consisting of a circular pinion that engages with the teeth of a flat bar, that converts rotational into linear motion; used in the steering mechanism of cars, and in some railways. A type of steering that uses such a gear arrangement: Ellipsis of rack and pinion steering. ==== Derived terms ==== ==== Translations ====