From The Collaborative International Dictionary of English v.0.48:
Flutter \Flut"ter\, v. t. 1. To vibrate or move quickly; as, a bird flutters its wings. [1913 Webster]
2. To drive in disorder; to throw into confusion. [1913 Webster]
Like an eagle in a dovecote, I Fluttered your Volscians in Corioli. --Shak. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Flutter \Flut"ter\, n. 1. The act of fluttering; quick and irregular motion; vibration; as, the flutter of a fan. [1913 Webster]
The chirp and flutter of some single bird --Milnes. . [1913 Webster]
2. Hurry; tumult; agitation of the mind; confusion; disorder. --Pope. [1913 Webster]
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. [1913 Webster]