Any of various naturally occurring impure mixtures of hydrocarbons.

Roget 356a: resin, rosin; gum; lac, sealing wax; amber, ambergris; bitumen, pitch, tar; asphalt, asphaltum; camphor; varnish, copal^†, mastic, magilp^†, lacquer, japan.    artificial resin, polymer; ion-exchange resin, cation-exchange resin, anion exchange resin, water softener, Amberlite^†, Dowex [Chem], Diaion.    ... show more

Dutch: asfalt, bitumen
Polish: bitum, bitumin, bitumen