Dictionary definition · smart
noun
- a kind of pain such as that caused by a wound or a burn or a sore
verb
- be the source of pain
adjective
- showing mental alertness and calculation and resourcefulness
- elegant and stylish"chic elegance"
- characterized by quickness and ease in learning"some children are brighter in one subject than another"
- improperly forward or bold"don't be fresh with me"
- painfully severe"he gave the dog a smart blow"
- quick and brisk"I gave him a smart salute"
- capable of independent and apparently intelligent action"smart weapons"
Source: Open English WordNet (CC BY 4.0).