n.1 a peculiarity of behaviour.
2 a trick of fate; a freak.
3 a flourish in writing.
4 (often attrib.) Archit. a hollow in a moulding.
Derivatives:
quirkish adj. quirky adj. (quirkier, quirkiest). quirkily adv. quirkiness n.
Etymology: 16th c.: orig. unkn.