The crossword solution for the term 'Little Spin' is EDDY, which is a four-letter word. An EDDY is a small whirlpool or current of air or water that moves in a circular motion, usually in a direction opposite to the main current. Eddies are often seen in rivers and streams, and can also be found in the atmosphere. They are caused by the interaction of two different currents, and can be used to measure the speed of the main current.