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| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a gadget; dingus; thingumbob. |
| flutter (ˈflʌtə) | |
| —vb | |
| 1. | to wave or cause to wave rapidly; flap |
| 2. | (intr) (of birds, butterflies, etc) to flap the wings |
| 3. | (intr) to move, esp downwards, with an irregular motion |
| 4. | (intr) pathol (of the auricles of the heart) to beat abnormally rapidly, esp in a regular rhythm |
| 5. | to be or make nervous or restless |
| 6. | (intr) to move about restlessly |
| 7. | swimming to cause (the legs) to move up and down in a flutter kick or (of the legs) to move in this way |
| 8. | informal (Brit) (tr) to wager or gamble (a small amount of money) |
| —n | |
| 9. | a quick flapping or vibrating motion |
| 10. | a state of nervous excitement or confusion |
| 11. | excited interest; sensation; stir |
| 12. | informal (Brit) a modest bet or wager |
| 13. | pathol an abnormally rapid beating of the auricles of the heart (200 to 400 beats per minute), esp in a regular rhythm, sometimes resulting in heart block |
| 14. | electronics a slow variation in pitch in a sound-reproducing system, similar to wow but occurring at higher frequencies |
| 15. | a potentially dangerous oscillation of an aircraft, or part of an aircraft, caused by the interaction of aerodynamic forces, structural elastic reactions, and inertia |
| 16. | swimming See flutter kick |
| 17. | music Also called: flutter tonguing a method of sounding a wind instrument, esp the flute, with a rolling movement of the tongue |
| [Old English floterian to float to and fro; related to German flattern; see | |
| 'flutterer | |
| —n | |
| 'flutteringly | |
| —adv | |
flutter flut·ter (flŭt'ər)
n.
Abnormally rapid pulsation, especially of the atria or ventricles of the heart.