Rosáceus, Aliud adiectiuum. Of roses. vnde Rosaceum oleum Oyle of roses.Corona rosacea. Plin. A garland of roses.Rosaceum rosacei, n. g. Substantiuum. Pli. Oyle of roses.
Lewis and Short: Latin dictionary
rŏsācĕus, a, um, adj. [rosa], made of roses, rose- (Plinian): corona, Plin. 21, 3, 6, 8: ceratum, id. 24, 13, 73, 119: oleum, id. 15, 7, 7, 30.—As subst.: rŏsācĕum, i, n., oil of roses, Plin. 22, 24, 50, 108; 32, 7, 23, 68.