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.(noun)
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.
See turbine in Webster's New World College Dictionary
Origin: Fr < L turbo, whirl: see turbinate
See turbine in American Heritage Dictionary 4
Origin: , from Latin turbō, turbin-, spinning top
Origin: , perhaps from Greek turbē, turmoil.
top: impulse turbine
bottom: reaction turbine
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