Lewis & Short

copta, ae, f., = κόπτη, a kind of cake made of pounded materials, Mart. 14, 68.
The same, or a similar kind, called cop-tŏplăcenta, Petr. 40, 4; Vesp. Judic. 46 (ap. Wernsd. Poët. Lat. Min. II. p. 234).