Definitions for "Worm gear"
Keywords:  gear, axes, mesh, spiral, teeth
1. The gear at the end of the steering column in a worm-and-sector steering system. 2. A gear that is shaped like a shaft with gear teeth cut in a continuous spiral around its outer surface. A worm gear changes the axis of rotation when it turns another gear.
A gear with slightly slanted teeth which are designed to meash with a "worm." In model railroading, the worm gear is usually mounted on the driving axle.
A gear wheel having special oblique teeth which mesh with a worm.
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