a peculiarity of action, behavior, or personality; mannerism

He is full of strange quirks.

a shift, subterfuge, or evasion; quibble.

a sudden twist or turn

He lost his money by a quirk of fate.

a flourish or showy stroke, as in writing.

Architecture .

an acute angle or channel, as one dividing two parts of a molding or one dividing a flush bead from the adjoining surfaces.

an area taken from a larger area, as a room or a plot of ground.

an enclosure for this area.

Obsolete . a clever or witty remark; quip.

formed with a quirk or channel, as a molding.

noun

aberration , caprice , characteristic , conceit , crotchet , eccentricity , equivocation , fancy , fetish , foible , habit , humor , ide fixe , idiosyncrasy , irregularity , kink , knack , mannerism , peculiarity , quibble , singularity , subterfuge , trait , turn , twist , vagary , whim , whimsy , quirkiness , band , crook , deviation , evasion , gibe , groove , oddity , prevarication , quip , retort , shift