smart in WordNet English dictionary

1. be the source of pain
   ache  smart  hurt 
   

1. characterized by quickness and ease in learning
   "some children are brighter in one subject than another"; "smart children talk earlier than the average"
   bright  smart 
   
2. elegant and stylish
   "chic elegance"; "a smart new dress"; "a suit of voguish cut"
   chic  smart  voguish 
   
3. improperly forward or bold
   "don't be fresh with me"; "impertinent of a child to lecture a grownup"; "an impudent boy given to insulting strangers"; "Don't get wise with me!"
   fresh  impertinent  impudent  overbold  smart  saucy  sassy  wise 
   
4. showing mental alertness and calculation and resourcefulness
   smart 
   
5. capable of independent and apparently intelligent action
   "smart weapons"
   smart 
   
6. quick and brisk
   "I gave him a smart salute"; "we walked at a smart pace"
   smart 
   
7. painfully severe
   "he gave the dog a smart blow"
   smart 
   

1. a kind of pain such as that caused by a wound or a burn or a sore
   smart  smarting  smartness