feathers
n. countable A2 Elementary US //ˈfɛðɝz// UK //fˈɛðəz// feath·ers
n. the soft, light things that cover a bird's body. They help birds fly, stay warm, and keep dry in the rain.
n. the light, keratinous structures that form the external plumage of birds. They provide thermal insulation, waterproofing, and the necessary aerodynamic surface for flight.
The bird shook its feathers to dry off after the rain.
The pillow is filled with soft duck feathers to make it more comfortable for sleeping.
Male peacocks display their vibrant tail feathers in an elaborate fan to attract a mate during the breeding season, demonstrating a classic example of sexual selection in the animal kingdom.
Usage
Usually used in the plural when referring to a bird's covering; the singular refers to a single unit of plumage.