Feathers collectively, plumage; (formerly also) spec. †down, downy plumage (obsolete). Now rare (chiefly poetic in later use).

The fine soft feathers forming the inner layer of a bird's plumage, often used for stuffing beds, pillows, etc. Also: the similar soft covering…

One of the filaments or fibres of a feather; the soft fine feathers or fur of birds or beasts; down, fluff.

A little feather; (Ornithology) a down feather; (also) each of the downy barbs near the base of a feather. Also figurative.

A down feather which grows continuously and disintegrates into a powder at the tips instead of being moulted (more fully powder-down feather); such…