1. any of various large aquatic birds of the family Anatidae chiefly of the genera cygnus and Olor, having webbed feet, a long slender neck, and usually white plumage.
2. see cygnus.
3. chiefly british to travel around from place to place: "swanning around europe nowadays, are we?” ( Jeffrey archer).
4. chiefly southern U.S. to declare; swear. used in the phrase I swan as an interjection. see regional note at vum.

1. any of various species of large, long-necked waterfowl, of genus cygnus, most of which have white plumage.
2. one whose grace etc. suggests a swan.
3. (intransitive) to travel from place to place with no fixed itinerary or purpose.
4. to declare (chiefly in first-person present constructions).

1. any one of numerous species of large aquatic birds belonging to cygnus, Olor, and allied genera of the subfamily Cygninæ. they have a large and strong beak and a long neck, and are noted for their graceful movements when swimming. most of the northern species are white. in literature the swan was fabled to sing a melodious song, especially at the time of its death.
2. fig.: an appellation for a sweet singer, or a poet noted for grace and melody.
3. the constellation cygnus.

1. to swear: used in the phrase I swan, an expression of emphasis. also swon.
2. A large lamellirostral palmiped bird, of the family Anatidæ and subfamily Cygninæ, with a long and flexible neck, naked lores, reticulate tarsi, and simple or slightly lobed hallux. ; ; ;
3. in heraldry, a bearing representing a swan, usually with the wings raised as it carries them when swimming. it is therefore not necessary to say in the blazon “with wings indorsed.” see below.
4. in astronomy see cygnus, 2.
5. see def. 1.

1. sweep majestically
2. stately heavy-bodied aquatic bird with very long neck and usually white plumage as adult
3. move about aimlessly or without any destination, often in search of food or employment
4. to declare or affirm solemnly and formally as true