1. A strange attitude or habit
   "His quirk endeared him to his friends";
   - oddity, queerness, quirkiness, crotchet
    
2. A narrow groove beside a beading
   "The carpenter added a quirk to the moulding for a more refined look"

1. Twist or curve abruptly
   "She quirked her head in a peculiar way"

Derived forms: quirks, quirked, quirking

Type of: channel, groove, strangeness, twist, unfamiliarity

Encyclopedia: Quirk, John