What is "flutter wheel"

Flutter \Flut"ter\, n.

1. The act of fluttering; quick and irregular motion; vibration; as, the flutter of a fan.

   The chirp and flutter of some single bird
   --Milnes. .

2. Hurry; tumult; agitation of the mind; confusion; disorder.
   --Pope.

   Flutter wheel, a water wheel placed below a fall or in a chute where rapidly moving water strikes the tips of the floats; -- so called from the spattering, and the fluttering noise it makes.

n. A water wheel placed below a fall or in a chute where rapidly moving water strikes the tips of the floats.