ratchet screwdriver

English Thesaurus

1. 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 (noun.artifact)

hypernym	:	screwdriver,
definition	:	a hand tool for driving screws; has a tip that fits into the head of a screw (noun.artifact)

part holonym	:	rachet, ratch, ratchet,
definition	:	mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction (noun.artifact)

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