I.a festival held on the 23d of March and 23d of May, when the trumpets used at sacrifices were purified, the feast of trumpets: “dies tubulustrium appellatur, quod eo die in atrio sutorio sacrorum tubae lustrantur,” Varr. L. L. 6, § 14 Müll. (cf. Ov. F. 3, 849).—Also plur.: “tubilustria,” Ov. F. 5, 725; cf. Fest. p. 352 Müll.
tŭbĭlustrĭum or tŭbŭlustrĭum , ii, n. tuba-lustro,