What is the meaning of Swan?

Any of various species of large, long-necked waterfowl, of genus Cygnus (bird family: Anatidae), most of which have white plumage.

One whose grace etc. suggests a swan.

This bird used as a heraldic charge, sometimes with a crown around its neck (e. g. the arms of Buckinghamshire).

To travel or move about in an aimless, idle, or pretentiously casual way.

To declare (chiefly in first-person present constructions).

swan (bird of the genus Cygnus)

The meat of a swan.

A swan as a heraldic symbol.

alternative form of swon (“pigherder”)

swan

man; warrior

herdsman; herder

servant

boy; lad

swan

Source: wiktionary.org