quindecemvir
Webster's Unabridged Dictionary:
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Quin·de·cem·vir
n. pl. E. Quindecemvirs , L. Quindecemviri .
[L., from quindecim fifteen + vir a man.]
(Rom. Antiq.) One of a sacerdotal college of fifteen men whose chief duty was to take care of the Sibylline books.
