- 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.
- Long hair on the lower legs of a dog or horse, especially a draft horse, notably the Clydesdale breed. Narrowly only the rear hair.
- Kind; nature; species (from the proverbial phrase "birds of a feather").
- A branching, hair-like structure that grows on the bodies of birds, used for flight, swimming, protection and display.
- A longitudinal strip projecting from an object to strengthen it, or to enter a channel in another object and thereby prevent displacement sideways but permit motion lengthwise; a spline.
- The angular adjustment of an oar or paddle-wheel float, with reference to a horizontal axis, as it leaves or enters the water.
- One of the fins or wings on the shaft of an arrow.
- To arrange in the manner or appearance of feathers.
"The stylist feathered my hair."
- (carpentry, engineering) To finely shave or bevel an edge.
- To render light as a feather; to give wings to.
- To cover or furnish with feathers.
- (aeronautics) To streamline the blades of an aircraft's propeller by rotating them perpendicular to the axis of the propeller when the engine is shut down so that the propeller doesn't windmill as the aircraft flies.
"After striking the bird, the pilot feathered the left, damaged engine's propeller."
- To adorn, as with feathers; to fringe.
- To tread, as a cock.
- (transitive, intransitive, rowing) To rotate the oars while they are out of the water to reduce wind resistance.
- (computer graphics) To intergrade or blend the pixels of an image with those of a background or neighboring image.
- To enrich; to exalt; to benefit.