quirk noun
ADJ. curious, odd, peculiar, strange | little
VERB + QUIRK have The system has some odd little quirks.
PREP. by a ~ of By a strange quirk of fate, she later married the first boyfriend she'd ever had. | ~ in as a result of some quirk in the social order
PHRASES a quirk of fate
You can also check other dicts: quirk (English, 中文解释 ), wordnet sense, Collins Definition