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English word hotshot comes from English hot
hot (English)
(incomparable) Electrically charged.. (informal) Radioactive. [from the 20thc.]. (informal) Very good, remarkable, exciting. [from the 19thc.]. (of a person or animal) Feeling the sensation of heat, especially to the point of discomfort.. (of a temper) Easily provoked to anger.. (of an object) Having a high temperature.. (of food) Spicy.. (of the weather) Causing the air to be hot.. (slang) [...]
hotshot (English)
Someone with exceptional skills in a certain field.. A type of firefighter highly skilled in wildfire firefighting without external support, using basic tools that are backpacked in, and manhandled about Displaying talent.. Highly skilled.