Hypertext Webster Gateway: "cogwheel"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Cogwheel \Cog"wheel`\, n.
A wheel with cogs or teeth; a gear wheel. See Illust. of
{Gearing}.
From WordNet (r) 1.7 (wn)
cogwheel
n : a toothed wheel that engages another toothed mechanism in
order to change the speed or direction of transmitted
motion [syn: {gear}, {gear wheel}]
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