swan in WordNet English dictionary

1. to declare or affirm solemnly and formally as true
   "Before God I swear I am innocent"
   affirm  verify  assert  avow  aver  swan  swear 
   
2. move about aimlessly or without any destination, often in search of food or employment
   "The gypsies roamed the woods"; "roving vagabonds"; "the wandering Jew"; "The cattle roam across the prairie"; "the laborers drift from one town to the next"; "They rolled from town to town"
   roll  wander  swan  stray  tramp  roam  cast  ramble  rove  range  drift  vagabond 
   
3. sweep majestically
   "Airplanes were swanning over the mountains"
   swan 
   

1. stately heavy-bodied aquatic bird with very long neck and usually white plumage as adult
   swan