1. The motion made by flapping up and down
   "the sudden fluttering of the startled pigeons";
   - flap, flapping, flutter

1. Flap the wings rapidly or fly with flapping movements
   "The seagulls fluttered overhead"
    
2. Move along rapidly and lightly; skim or dart
   "The hummingbird fluttered among the branches";
   - flit, fleet, dart
    
3. Move back and forth very rapidly
   "the candle fluttered";
   - flicker, waver, flitter, quiver
    
4. Beat rapidly
   "His heart fluttered";
   - palpitate
    
5. Wink briefly
   "flutter one's eyelids";
   - bat

Derived forms: flutterings

Type of: barrel [informal], beat, belt [informal], belt along [informal], blink, bucket [informal], bucket along [informal], flap, hasten, hie [archaic], hotfoot, hurry, move back and forth, nictate, nictitate, pelt [informal], pelt along [informal], pound, race, rocket [informal], rush, rush along, speed, step on it [informal], thump, travel rapidly, undulation, wave, whizz [informal], whizz along [informal], wing [informal], wink, zip [informal], zoom, zoom along [informal]

Encyclopedia: Flutter