" It's her, Ron! " Harry shouted as the girl who so resembled a veela got gracefully to her feet, shook back her sheet of silvery blonde hair, and swept up between the Ravenclaw and Hufflepuff tables.
It's a metaphor for a 'mental state' that we could experience according to the Taoist sages, in which we move lightly through life as if we're floating.
She was a tall woman, standing a head higher than her fiery little husband, but she moved with such quiet grace in her swaying hoops that the height attracted no attention to itself.
This phantom wore many faces, but it always had golden hair, was enveloped in a diaphanous cloud, and floated airily before his mind's eye in a pleasing chaos of roses, peacocks, white ponies, and blue ribbons.