from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A gear with teeth radially arrayed on the rim parallel to its axis.
from The Century Dictionary.
- noun Same as
- noun Toothed gearing for transmission of motion and power in which the pitch-surfaces from which the teeth are developed are cylinders with elements parallel to the axis.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun gear wheels that mesh in the same plane
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