crotchet
crot-chet
noun
A musical note lasting one quarter of a semibreve or two quavers.
"The conductor asked for a crisp crotchet."
noun
A peculiar, eccentric idea or a whimsical fancy.
"He has a strange crotchet about only eating green food."
Thesaurus
Synonyms: oddity, queerness, quirkiness, quirk, quarter note, hook