Okay, you got me on the nomenclature. It is actually a turbine. But with that said, it wouldn't really be called an anemometer either (because that's a measurement device). So I guess they'd actually be called a wind turbine but I'll call it "anemometer style".
Anyway... Side note, the windmills in Holland are also turbines. They don't grind flower but are actually connected to water pumps. The dutch actually created a system of dams and levees in part of the channel and pumped water out to create more usable land.