Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

Īdus (often eidus, v. Inscr. Orell. 42), ŭum, f. [acc. to Macr. S. 1, 15, from the Etrusc. ‡ iduo, to divide; hence, qs. the divided or half month; but prob. Sanscr. root, indh-, idh-, to kindle, lighten; indu, moon; prop. the days of light, of the moon], one of the three days in each month from which the other days were reckoned in the Roman calendar, the Ides; it fell upon the fifteenth day of March, May, July, and October; upon the thirteenth day in the remaining months (cf.: Kalendae, Nonae): res ante idus acta sic est: nam haec idibus mane scripsi, Cic. Fam. 1, 1, 3: duas epistulas accepi postridie idus, alteram eo die datam, alteram idibus, id. Att. 15, 17, 1: haec S. C. perscribuntur a. d. VIII. idus Januarias, Caes. B. C. 1, 5, 4: omnia licet concurrant: idus Martiae consolantur, Cic. Att. 14, 4, 2; cf.: stulta jam iduum Martiarum est consolatio, id. ib. 15, 4, 2: si quid vellent, a. d. idus Apr. reverterentur, Caes. B. G. 1, 7 fin.: iduum Septembrium dies, Tac. A. 2, 32: postero iduum dierum, id. H. 1, 26.
The ides were sacred to Jupiter, Varr. ap. Macr. S. 1, 14; cf. idulis.
Interest was paid on the ides: fenerator Alphius, Jam jam futurus rusticus, Omnem redegit idibus pecuniam, Quaerit Kalendis ponere, Hor. Epod. 2, 69: diem pecuniae Idus Novembres esse, Cic. Att. 10, 5, 3: jam vel sibi habeat nummos, modo numeret Idibus, id. ib. 14, 20, 2: praetermitto ruinas fortunarum tuarum, quas omnes impendere tibi proximis Idibus senties, id. Cat. 1, 6, 14.
The payment of school-money at the ides is referred to in: (pueri) Ibant octonis referentes idibus aera, Hor. S. 1, 6, 75; v. Orell. ed h. 1.