1
to dance (orig. a whirling dance)
See also:
踊る (おどる)
2
to whirl (in the wind);to flutter (about);to swirl;to fly;to circle;to wheel
ヒラヒラと桜の花が舞っている。もうお花見の季節も終わりだな。
It looks like cherry blossom-viewing season is at an end. You can see the petals fluttering down.