Ask at the forum if you have an Ancient or Modern Greek query!
septimatrus
Latin > English (Lewis & Short)
septĭmātrūs: ŭum, f. septimus, I a festivalcelebratedseven days after the ides, acc. to Varr. L. L. 6, § 14 Müll.; and Fest. s. v. quinquatrus, pp. 255 and 257 ib.