n. a person skilled at locating the causes of problems and rectifying them
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a worker whose job is to locate and fix sources of trouble (especially in mechanical devices)
Word Usage
"Pranab Mukherjee's last chance to create a legacy man who is going to present the Union Budget 2010-11 in Parliament on Friday is often described as the troubleshooter of the United Progressive"