Definition of "wrinkle" []

• A small furrow, ridge, or crease on a normally smooth surface, caused by crumpling, folding, or shrinking. (noun)
• A line or crease in the skin, as from age. (noun)
• A clever trick, method, or device, especially one that is new and different. (noun)
• A problem or imperfection; a fault: The report had to be revised because of a few wrinkles. (noun)
• To make wrinkles or a wrinkle in. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "People meeting me for the first time don't believe my age because I remain wrinkle free and pretty much mentally alert."
• "One extra wrinkle is that some loan officers are good at teasing out the details of a borrower's credit history and finding those that have bad pasts but good futures."
• "One wrinkle is that agencies often don't own up to the costs of their rules, so REINS should also hold for rules that a member designates as particularly controversial, not just "major" ones."