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 wheel affixed to a press drill (a seed drill) to compact soil in the seeded furrows.

The wheel that drives a clock's pendulum, corresponding to the balance wheel in a watch.

In some striking timepieces, a rotating piece with a spiral periphery having notches so arranged as to determine the number of strokes made on the bell.

(engineering) A wheel with the cogs on the face of the edge like a spur.

A machine for cutting the teeth on watch and clock wheels.

plural of wheel plough

A bevel wheel having its face inclined 45° to its axis.

plural of wheel-barrow