Source : Webster's Revised Unabridged Dictionary (1913)

Maltha \Mal"tha\, n. [L., fr. Gr. ?.]
   1. A variety of bitumen, viscid and tenacious, like pitch,
      unctuous to the touch, and exhaling a bituminous odor.

   2. Mortar. [Obs.] --Holland.

Source : WordNet®

maltha
     n : a thick black tar intermediate between petroleum and asphalt
         [syn: {mineral tar}]