a curved piece above the wheel of a bicycle or motorcycle to protect the rider from water or mud thrown up by the wheels | a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines) |
| a circular helm to control the rudder of a vessel |
| an instrument of torture that stretches or disjoints or mutilates victims |
| game equipment consisting of a wheel with slots that is used for gambling; the wheel rotates horizontally and players bet on which slot the roulette ball will stop in |
| a handwheel that is used for steering |
| a wheeled vehicle that has two wheels and is moved by foot pedals |
| forces that provide energy and direction |