Wiktionary
wind machine
n. an electrically driven fan for generating currents of air during the production of films etc
Wikipedia
Wind machine
The wind machine (also called aeoliphone) is a friction idiophone, which is a class of instrument which produces sound through vibrations within the instrument itself. It is a specialist musical instrument used to produce the sound of wind in orchestral compositions and musical theater productions.
Usage examples of "wind machine".
The big wind machine was much like the eighteenth-century Old Mill in outline, a round cone of beams and planks on a circular base of mortared stone, ending in a timber circle twenty feet above.
Rupert Campbell-Black, showing Helen, huge-eyed, swan-necked, her Titian hair spread by a wind machine, Rupert’.