: any of a class (Aves) of warm-blooded vertebrates distinguished by having the body more or less completely covered with feathers and the forelimbs modified as wings
Noun
A large bird flew overhead.
The birds were singing outside our window.
He's a tough old bird.
We met some smashing birds at the pub last night.
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Noun
The California least tern is a white-and-black bird less than 10 inches long that breeds only in a few areas along the bays and lagoons of California and Mexico and is in danger of extinction because of coastal development.—Phil Diehl, San Diego Union-Tribune, 13 Jan. 2026 Two of the monkeys had applauded the event with hopping and grunts, but the other three had shot like arrows into the trees, chasing after the peculiar bird that had remained indifferent to their antics.—Literary Hub, 12 Jan. 2026
Verb
All ornithologists have to go birding, and all the birders have a little bit of ornithology in them.—Maura Fox, San Diego Union-Tribune, 4 Jan. 2026 More than 900 acres of the park’s wetlands can be accessed through a locked gate, only for visitors going birding, kayaking, hiking, and more.—Amanda Ogle, Travel + Leisure, 15 Dec. 2025 See All Example Sentences for bird
Word History
Etymology
Noun
Middle English brid, bird, from Old English bridd
First Known Use
Noun
before the 12th century, in the meaning defined at sense 1