Cosmus, i, m., a celebrated maker of, and dealer in unguents at Rome, Juv. 8, 86; Mart. 11, 8, 9; 1, 89, 2; 14, 110, 1.
Hence, Cosmĭānus, a, um, adj., named or derived from Cosmus: ampullae, Mart. 3, 82, 26; and subst.: Cosmĭānum, i, n. (sc. unguentum), an unguent made by him, Mart. 12, 55, 7; 11, 15, 6.