The action of taking the effort to devise a solution to a problem, unaware of the fact that someone else has already devised the same solution to the same problem.

present participle of reinvent the wheel.

A symbol of indigenous North American culture and religion. / A stone monument related to this symbol, constructed by laying stones in a particular pattern on the ground oriented to the four directions.

A gear arrangement consisting of a screw (the worm) whose thread meshes with a gear wheel in such a way as to turn the direction of drive through a right angle.

Alternative form of millwheel

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

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

A device for measuring distance, consisting of a wheel of fixed circumference, a handle, and a clicking device triggered by each revolution of the wheel.