The definition of a turbine is an engine that provides continuous power because a wheel or a rotor is continually turning due to pressure from fast moving water, gas or steam.
An engine powered by water pressure causing a wheel to turn that allows you to run your dairy machine is an example of a turbine.
an engine or motor having a drive shaft driven either by the impulse of steam, water, air, gas, etc. against the curved vanes of a wheel (or set of wheels) or by the reaction of fluid passing out through nozzles located around the wheel
Origin of turbineFrench ; from Classical Latin turbo, whirl: see turbinate
Any of various machines in which the kinetic energy of a moving fluid is converted to mechanical power by the impulse or reaction of the fluid with a series of buckets, paddles, or blades arrayed about the circumference of a wheel or cylinder.
Origin of turbineFrench, from Latin turbō, turbin-, spinning top, perhaps from Greek turbē, turmoil.
top: impulse turbine
bottom: reaction turbine