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