Wiktionary
a. (context simile English) extremely light, having minimal weight
Wikipedia
Light as a Feather ( 1973) is the second studio album of fusion band Return to Forever, led by pianist Chick Corea.
Usage examples of "light as a feather".
It was light-as light as a feather-but bulky, and although he knew it was his enemy he could not bring himself to damage any part of it.
Though her touch was as light as a feather, he had a distinct impression she was trying to soothe him as she said, .
Quiet as a shadow, she repeated, sliding forward, light as a feather.
She felt she had sponge for muscle, and it was really just as well she was light as a feather, as a feather seemed to be the limit of what they could lift.
More ingenious were these changeling restraints from the Second Age, which seem go on, feel, master, you shouldn't just take my word for it light as a feather in comparison.
The massive crane was swiveled around, a huge chain and hook lowered to the pick-up ring on the RUM tractor, and the submarine explorer was lifted up and swung out over the water as if its three-ton weight were light as a feather.
It was like being ten years old again, he thought, senses fresh and sharp, a body so full of energy he was light as a feather.
It was as light as a feather, yet stronger than the well-tanned hide of a zitidar.