Smart people and things are pleasantly neat and clean in appearance.

You can describe someone who is clever as smart .

A smart place or event is connected with wealthy and fashionable people.

Smart bombs and weapons are guided by computers and lasers so that they hit their targets accurately.

If a part of your body or a wound smarts, you feel a sharp stinging pain in it.

If you are smarting from something such as criticism or failure, you feel upset about it.

The smart set is a group of fashionable and wealthy people.