Quirk

1. A fit or turn; a short paroxysm; a caprice.
2. A small channel, deeply recessed in proportion to its width, used to insulate and give relief to a convex rounded molding.
3. An irregular air; as, light quirks of music.
4. A sudden turn; a starting from the point or line; hence, an artful evasion or subterfuge; a shift; a quibble; as, the quirks of a pettifogger.
5. A piece of ground taken out of any regular ground plot or floor, so as to make a court, yard, etc.; -- sometimes written quink.
6. A smart retort; a quibble; a shallow conceit.