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panache

American  
[puh-nash, -nahsh] / pəˈnæʃ, -ˈnɑʃ /

noun

  1. a grand or flamboyant manner; verve; style; flair.

    The actor who would play Cyrano must have panache.

  2. an ornamental plume of feathers, tassels, or the like, especially one worn on a helmet or cap.

  3. Architecture. the surface of a pendentive.


panache British  
/ -ˈnɑːʃ, pəˈnæʃ /

noun

  1. a dashing manner; style; swagger

    he rides with panache

  2. a feathered plume on a helmet

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of panache

First recorded in 1545–55; variant (after French ) of pennache, from Middle French, from early Italian pennachio, from Late Latin pinnāculum, diminutive of pinna “wing”; identical in form with pinnāculum “roof gable, peak”; pinnacle