<p><strong>Noun</strong></p><ul><li>an expert in discovering and eliminating the cause of problems or malfunctions in software, mechanical equipment, power lines, etc.: An experienced troubleshooter can make power outages much shorter.</li><li>a person with special skill in resolving disputes, impasses, etc., as in business, national, or international affairs: She's worked as a diplomatic troubleshooter in the Middle East.</li></ul>