1 : to flap the wings rapidly butterflies fluttering among the flowers. 2a : to move with quick wavering or flapping motions a sail fluttering in the wind. b : to vibrate in irregular spasms his heart fluttered. 3 : to move about or behave in an agitated aimless manner She nervously fluttered around the office.
What is called Flutter?
1 : to flap the wings rapidly butterflies fluttering among the flowers. 2a : to move with quick wavering or flapping motions a sail fluttering in the wind. b : to vibrate in irregular spasms his heart fluttered. 3 : to move about or behave in an agitated aimless manner She nervously fluttered around the office.