1. an idiosyncrasy; a slight glitch, mannerism; something unusual about the manner or style of something or someone
    The car steers cleanly, but the gearshift has a few quirks.
  2. An acute angle dividing a molding; a groove that runs lengthwise between the upper part of a moulding and a soffit
  3. A quibble, evasion, or subterfuge.

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