Lewis & Short

tentōrĭum, ii, n. [tendo; prop. something stretched out], a tent (syn. tabernaculum), Hirt. B. G. 8, 5; Suet. Aug. 96; id. Tib. 18 med.; Verg. A. 1, 469; Ov. F. 3, 527; id. M. 8, 43; 13, 249; Luc. 1, 396; 6, 270; 9, 912.