What does feather mean?
A feather is one of the lightweight, keratin-based structures that make up a bird's plumage, providing the lift needed for flight along with insulation and display. Each feather grows from a follicle in the skin and consists of a central shaft with interlocking barbs that create a smooth vane. Beyond ornithology, the word appears throughout everyday English: we describe things as light as a feather, count achievements as feathers in our caps, and speak of ruffling feathers when tempers are stirred. Feathers have long carried cultural weight — as symbols of quill pens, down bedding, and decorative adornment — and the word extends readily into compounds such as featherweight and featherlight. Remarkably, feathers predate birds themselves; fossil evidence shows that many non-avian dinosaurs bore feathers millions of years before powered flight evolved. Both noun and verb, "feather" remains one of English's most versatile and evocative words for lightness and delicacy.
One of the light, flat structures covering a bird's skin, forming its plumage and enabling flight.
"She found a bright blue feather on the forest floor."
Count noun; plural "feathers". Often used attributively, as in "feather pillow" or "feather boa".
To turn a blade, oar, or propeller so that it moves edge-on through air or water to reduce drag; also, of a bird, to grow or groom feathers.
"The pilot feathered the engine's propeller after it failed mid-flight."
Regular plural. The uncountable mass form "feather" can also refer to the substance, as in a cushion stuffed with feather.
"Down pillows are often blended with goose feathers for support."
Feathers evolved before flight: dinosaurs like Velociraptor wore them for insulation and display millions of years before any of them took to the air.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of feather
"Feather" descends from Old English "feþer", which shares a common Germanic root with German "Feder", Dutch "veer", and Old Norse "fjörðr"-related forms. The word traces ultimately to Proto-Indo-European *pet-, meaning "to rush or fly", the same root behind Greek "pteron" (wing) — seen in "pterodactyl" and "helicopter" — making "feather" a distant cousin of those Greek terms. The spelling with -ea- reflects later standardization of Middle English vowel spellings.
Related word forms
How feather is actually used
In figurative use, "a feather in one's cap" denotes a proud achievement, while "to ruffle feathers" means to annoy or upset people. As a verb, "to feather" can mean to turn a propeller or oar edge-on to reduce drag, or to grow feathers.
Easily confused with feather
"Father" means a male parent, while "feather" is the plumage structure of a bird — they differ in both vowel sound and meaning.