freewheel
noun
- 1
A device in a transmission that disengages the driveshaft from the driven shaft when the driven shaft rotates faster than the driveshaft.
verb
- 1
(of a gear) To continue spinning after disengagement.
- 2
(of a cyclist) To ride a bicycle without pedalling, e.g. downhill.
- 3
(of a motorist) To operate a motor vehicle which is coasting without power, e.g. downhill.
- 4
(by extension) To operate free from constraints.
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