O / ŏpertōrĭum
noun

ŏpertōrĭum

gen. ŏpertōrii · gender neuter · decl. 2nd
a cover figuratively
In gen., a cover (post-Aug.), Sen. Ep. 87, 2; Vulg. Exod. 36, 19.—Trop.: peccati, Ambros. in Psa. 118, Serm. 7, § 31; id. Cant. Cantic. 3, § 2.—
in particular
A garment
A garment, Vulg. Psa. 101, 27.—
A grave
A grave (post-class.), Sid. Ep. 3, 12.