1. toothed wheels that mesh with other toothed wheels to transmit motion in machinery

Examples

• The old clock’s cogwheels turned slowly as it chimed the hour.
• Engineers designed the cogwheels to mesh perfectly for smooth operation.
• When one cogwheel broke, the entire machine stopped working.
• The factory worker oiled the cogwheels to prevent rust and wear.
• Children watched fascinated as the cogwheels spun inside the glass case.
• The bicycle’s cogwheels help transfer power from the pedals to the wheels.