Lewis & Short

1. murrĭnus (murrhĭnus, myr-rhĭnus), a, um, adj. [1. murra], of or belonging to myrrh: odor, Plaut. Poen. 5, 4, 6: oleo, Vulg. Esth. 2, 12.
Subst.: mur-rĭna, ae, f. (sc. potio), a drink made of good wine, flavored with myrrh and other spices, Plaut. Ps. 2, 4, 51; Doss. ap. Plin. 14, 13, 15, § 92; § 93; cf.: murrina, genus potionis quae Graece dicitur νέκταρ, Paul. ex Fest. p. 144 Müll.