swan

noun

pl. swans or swan any of several large-bodied, web-footed waterfowl (family Anatidae, esp. genus Cygnus) with a long, graceful neck and, typically, pure white feathers: swans are graceful swimmers and strong fliers
a person who resembles or is thought to resemble a swan in some way; sometimes, specif., a great poet or singer

intransitive verb

Brit., Informal to move slowly or majestically, with a calm, serene air

☆

intransitive verb

Dialectal to swear: usually in the exclamation , used to express surprise, impatience, etc.

See swan in American Heritage Dictionary 4