present participle of reinvent the wheel.

(Buddhism) A rotating cylinder either inscribed with or containing prayers, mainly used by Tibetan Buddhists.

(circus) A hollow wheel larger than a person, attached to and suspended from an axle, and inside of which an artist performs.

A gear wheel that revolves around the wheel with which it meshes, in an epicyclic train.

A water wheel placed below a fall or in a chute where rapidly moving water strikes the tips of the floats.

prayer wheel

In water-powered mills, a horizontal water wheel used to power a grinding stone set in a tub; usually in the form of a short cylinder turned by the impact of one or more streams of water striking against vanes attached radially to the wheel.

A type of hubcap or inner wheel ornament that spins independently inside of a wheel itself when the vehicle is in motion, and continues to spin once the vehicle has come to a stop.

(engineering) One of a set of wheels of different sizes and number of teeth, that may be changed or substituted for one another in machinery, to produce a different but definite rate of angular velocity in an axis, as in cutting screws, gear, etc.

(cycling) To match the pace of riders who are setting the tempo.