A wheel with grooves (teeth) engraved on the outer circumference, such that two such devices can interlock and convey motion from one to the other.
1The driving gear too, with the exception of one cog wheel, was in workable order.
2Now I'll put a plug in there, and the cog wheel won't come loose again.
3If these are all right, you will find that either a pulley or a little cog wheel is loose.
4The internal fittings and cog wheels were also wood.
5They were literally covered with cog wheels, levers, handles, springs, pieces of machinery, patterns, models, and strange devices.
6The old man puffed, puffed, and his vrouw clicked her knitting needles, as if regulated by internal cog wheels.
7When a man tries to stop a great machine by putting his impudent fingers into the cog wheels, the man's a fool.
8There was a gasp from the audience, and one could almost see the mental cog wheels of sixty girls going furiously to work.