Lewis Short
maltha (noun F) = μάλθα:
* A kind of thick, fatty petroleum from Samosata, fossil tar, the flame of which could be extinguished only with earth, Plin. 2, 104, 108, § 235.
* Transf., a kind of varnish or cement made of slaked lime and hog's fat: maltha e calce fit recenti; gleba vino restinguitur: mox tunditur cum adipe suillo et ficu, Plin. 36, 24, 38, § 181; Pall. 1, 41.— *
* Trop., an effeminate person, Lucil. ap. Non. 37, 9.
Charlton T. Lewis, Charles Short, A Latin Dictionary