a person with special skill in resolving disputes, impasses, etc., as in business, national, or international affairs: a diplomatic troubleshooter in the Middle East.
2.
an expert in discovering and eliminating the cause of trouble in mechanical equipment, power lines, etc.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a scrap or morsel of food left at a meal.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.