Pitch
Pitch, a dark-colored, thick, sticky substance produced from any one of several sources. Pitch that occurs naturally is called mineral pitch. Asphalt is a mineral pitch. Pitch can also be produced from coal tar, petroleum, and wood products. Pitch is similar to tar, but tar tends to be liquid at room temperature, while pitch is more or less solid. Pitch is widely used in road construction and as a waterproofing material for roofs.
Pitch also is the name for the resin from a number of coniferous trees. Some varieties of this kind of pitch have medicinal value.