From Longman Dictionary of Contemporary Englishhotshothot‧shot /ˈhɒtʃɒt $ ˈhɑːtʃɑːt/ noun [countable] informalSUCCESSFUL someone who is very successful and confident a hotshot lawyer
Examples from the Corpus
hotshot• In the 40-pound pack that each hotshot carries is enough food, water and equipment to be self-sufficient for 24 hours.• But since Osbourne went solo in 1980, a variety of hotshots have taken the guitar spot. 