from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A gear with teeth radially arrayed on the rim parallel to its axis.

from the GNU version of the Collaborative International Dictionary of English

  • n. a cogwheel having teeth which project radially and stand parallel to the axis; a spur wheel.

from The Century Dictionary and Cyclopedia

  • n. Same as spur-gearing.
  • n. 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.

  • n. gear wheels that mesh in the same plane


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