A square wheel is a wheel that, instead of being circular, has the shape of a square. Such a wheel can roll smoothly if the ground consists of evenly shaped bumps of the right size and curvature. Stan Wagon, a mathematician at Macalester College, has constructed a bicycle with square wheels.
Example Usage of Square
MLMNoobie: To be or not to be - that is the Square root of 4 b^2. #quote
msliedrecht: I'm at Times Square Center (Sheikh Zayed Rd, Dubai). http://4sq.com/6rBip3
