Definition from Wiktionary, the free dictionary
See also cygnus
- Some of the swans, notably the North American trumpeter swan and tundra swan were earlier classified to the genus Olor, but they are now regarded as belonging to Cygnus.
- (astronomy): A summer constellation of the northern sky, said to resemble a swan. It includes the triple star system HD 188753 and the stars Deneb and Albireo.
- (Greek mythology): A king of the Ligurians and relative of Phaeton who was transformed into a swan and placed in the sky as a constellation.