- any of several large, stately aquatic birds of the subfamily Anserinae, having a long, slender neck and usually pure-white plumage in the adult.
- a person or thing of unusual beauty, excellence, purity, or the like.
- a person who sings sweetly or a poet.
- the constellation Cygnus.
- to swear or declare (used with I): Well, I swan, I never expected to see you here!
- British chemist, electrical engineer, and inventor.
- any large aquatic bird of the genera Cygnus and Coscoroba, having a long neck and usually a white plumage: family Anatidae, order Anseriformes
- rare, literary
- a poet
- (capital when part of a title or epithet)
- to wander idly
- a river in SW Western Australia, rising as the Avon northeast of Narrogin and flowing northwest and west to the Indian Ocean below Perth. Length: about 240 km (150 miles)
- Sir Joseph Wilson. 1828–1914, English physicist and chemist, who developed the incandescent electric light (1880) independently of Edison
