streaming or flapping or spreading wide as if in a current of air; "ran quickly, her flaring coat behind her"; "a fluttering scarf"; "flying banners"; "flags waving in the breeze"
the motion made by flapping up and down
moving rapidly and lightly to and fro as of or with wings; "fluttering birds"; "the flittering wings of a fledgling"
having a slight and rapid trembling motion; "a fluttering heartbeat"; "palpitant movements rather than violent eruptions"; "my palpitating heart"
