groom in WordNet English dictionary

1. a man who has recently been married
   groom  bridegroom 
   
2. a man participant in his own marriage ceremony
   groom  bridegroom 
   
3. someone employed in a stable to take care of the horses
   stableman  stableboy  groom  hostler  ostler 
   

1. give a neat appearance to
   "groom the dogs"; "dress the horses"
   dress  groom  curry 
   
2. care for one's external appearance
   "He is always well-groomed"
   groom  neaten 
   
3. educate for a future role or function
   "He is grooming his son to become his successor"; "The prince was prepared to become King one day"; "They trained him to be a warrior"
   prepare  groom  train