Lewis Short
gĕmellar | gĕmellārĭa, ae | gĕmellārĭum, i (noun N.f.n) : gemellus
* A vessel for holding oil (very rare), Col. 12, 52, 10.— Also , , , Aug. ap. Psa. 136 med.; and , , , id. ap. Psa. 80, 1 al.
Charlton T. Lewis, Charles Short, A Latin Dictionary