quirk

nouns

a strange attitude or habit
crotchet, oddity, queerness, quirk, quirkiness
is derived from
quirky
a narrow groove beside a beading
quirk
is a type of (narrower)
a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)
channel, groove

verbs

twist or curve abruptly
"She quirked her head in a peculiar way"
quirk
is a type of (narrower)
turn in the opposite direction
"twist one's head"
twist