dandy in WordNet English dictionary

1. very good
   "he did a bully job"; "a neat sports car"; "had a great time at the party"; "you look simply smashing"
   bang-up  bully  corking  cracking  dandy  great  groovy  keen  neat  nifty  not bad  peachy  slap-up  swell  smashing 
   

1. a man who is much concerned with his dress and appearance
   dandy  dude  fop  gallant  sheik  beau  swell  fashion plate  clotheshorse 
   
2. a sailing vessel with two masts; a small mizzen is aft of the rudderpost
   yawl  dandy