Other forms: covens
A coven is a gathering of witches. A coven of thirteen, meet with the coven, the local coven.
The number thirteen was invented in the twentieth century rather than handed down from anywhere older. The word is the same one as convent and originally meant simply an assembly of people.
1nouncovenA gathering of witches.
“The coven in the novel met on a hill above the town.”
coven is a gathering.
Middle English covent comes from Latin conventum, an assembly, from convenire, to come together; it is the same word as convent.
Latin
conventum
Old French
covent
Anglo-Norman
covent
Middle English
covent
English, today
coven
Built from
From Middle English covent, from Anglo-Norman covent, from Old French covent, from Latin conventum, from conveniō, from cum (“with”) and venio (“to come”). a doublet of convent.
Etymology from Wiktionary, CC BY-SA