| NOUN | artifact | ratch, ratchet, rachet | mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction |
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| Meaning | mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction. | |
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| Synonyms | ratchet, rachet | |
| Part of | spiral ratchet screwdriver, ratchet screwdriver | A screwdriver with a ratchet (so the blade turns in only one direction) and a spiral in the handle (so the blade rotates) with downward pressure on the handle |
| Parts | pawl, detent, click, dog | A hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward |
| ratchet wheel | toothed wheel held in place by a pawl or detent and turned by a lever | |
| Broader | mechanical device | mechanism consisting of a device that works on mechanical principles |
| Spanish | matraca, trinquete | |
| Catalan | trinquet | |
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