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worm gear
- a gear with teeth designed to mesh with the thread of a worm ()
- a mechanism consisting of this gear and a worm ()
See worm gear in American Heritage Dictionary 4
noun
- A gear consisting of a spirally threaded shaft and a wheel with marginal teeth that mesh into it.
- The toothed wheel of this gear; a worm wheel.
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worm gear
worm gear assembly
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