Flutter

Flutter can refer to:
 * Flutter (electronics and communication) is any rapid variation of signal parameters.
 * in aircraft structures, control surfaces and bridge engineering, aeroelastic flutter is a rapid self-excited motion, potentially destructive, usually present above some limiting aircraft speed.
 * In aeronautics is, in a few words, an unstability of the aircraft's structural vibration modes due to aerodynamic forces presents.
 * in suspended fabric such as flags or clothing, rapid motion due to wind.
 * flutter is also the qualitative perception that follows stimulating the skin with a point probe vibrating close to 40 Hz.

In medicine
The term "heart flutter" can mean a few things:
 * atrial flutter
 * ventricular flutter

In music

 * "Flutter" is an album and a composition by Otomo Yoshihide's New Jazz Quintet.
 * "Flutter", a song by Bonobo from his 2003 album Dial 'M' For Monkey
 * "Flutter" is also a song by Autechre off 1994's Anti EP.