coven
/ˈkʌvən/noun
1- a group or gathering of witches who meet regularly（定期的）女巫的聚会; （定期聚会的）一群女巫。
1.1
- figurative, often derogatory a secret or close-knit group of associates〈喻, 常贬〉秘密小集团：
covens of militants within the party
党内激进分子的小集团。
词源
mid 17th cent.: variant of COVIN.