A branching, hair-like structure that grows on the skin of birds and protects them against coldness and water and allows their wings to create lift.
The light horny waterproof structure forming the external covering of birds.
Any of the secondary barbs that form a fringe of small projections on a feather.
One of the two shims of the three-piece stone-splitting tool known as plug and feather or plug and feathers; the feathers are placed in a borehole and then a wedge is driven between them, causing the stone to split.
Layer or collection of feathers covering a bird’s body; feathers used ornamentally.