- (archaic) A quibble, evasion, or subterfuge.
- (architecture) An acute angle dividing a molding; a groove that runs lengthwise between the upper part of a moulding and a soffit
- 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."
- (transitive, intransitive) To move with a wry jerk.
"The corners of her mouth quirked."
"He quirked an eyebrow."