Noun – Hot spot
1 informal : a very popular or active place
The new restaurant is the latest hot spot in town.
a vacation hot spot
2 : a place where there is much danger or fighting
This part of the country is a hot spot of rebel activity.
a global hot spot (=an area in the world where war is possible or likely)
3 : a place (such as an area in a restaurant or hotel) where it is possible to make a wireless connection to the Internet