pissasphalt

n. [ L. pissasphaltus, Gr. &unr_;; &unr_; pitch + &unr_; asphalt: cf. F. pissasphalte. ] (Min.) Earth pitch; a soft, black bitumen of the consistency of tar, and of a strong smell. It is inflammable, and intermediate between petroleum and asphalt. [ Written also pisasphaltum, pisasphalt, etc. ] [ 1913 Webster ]