troub ‧ le ‧ shoot ‧ er /ˈtrʌb ə lˌʃuːtə $ -ər/ BrE AmE noun [countable]
1 . an independent person who is employed to come into an organization to deal with serious problems
2 . computer software which asks you a series of questions to try to find the cause of a computer problem, and suggests possible solutions
—troubleshooting noun [uncountable]