Definition of quirking:
(n) :
An idiosyncrasy; a slight glitch, a mannerism; something unusual about the manner or style of something or someone.
(v) :
To alter in a unique and unusual way.
(v) :
(ambitransitive) To (cause to) move with a wry jerk.
(n) :
(architecture) An acute angle dividing a molding; a groove that runs lengthwise between the upper part of a molding and a soffit.
(v) :
(transitive, architecture) To furnish with a quirk or channel.
(n) :
(archaic) A quibble, evasion, or subterfuge.