Etymology
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hot spot (n.)

also hotspot, 1888 as a skin irritation; 1931 as "nightclub;" 1938 in the firefighting sense; 1941 as "place of international conflict." See hot (adj.) + spot (n.).

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Definitions of hot spot

hot spot (n.)
a place of political unrest and potential violence;
the United States cannot police all of the world's hot spots
Synonyms: hotspot / trouble spot / flashpoint
hot spot (n.)
a point of relatively intense heat or radiation;
Synonyms: hotspot
hot spot (n.)
a lively entertainment spot;
Synonyms: hotspot
From wordnet.princeton.edu