The Collaborative International Dictionary of English v.0.48:
Pitch \Pitch\, n. [OE. pich, AS. pic, L. pix; akin to Gr. ?.]
1. A thick, black, lustrous, and sticky substance obtained by
boiling down tar. It is used in calking the seams of
ships; also in coating rope, canvas, wood, ironwork, etc.,
to preserve them.
He that toucheth pitch shall be defiled therewith.
2. (Geol.) See Pitchstone.
Amboyna pitch, the resin of Dammara australis. See
Burgundy pitch. See under Burgundy.
Canada pitch, the resinous exudation of the hemlock tree
(Abies Canadensis); hemlock gum.
Jew's pitch, bitumen.
Mineral pitch. See Bitumen and Asphalt.
Pitch coal (Min.), bituminous coal.
Pitch peat (Min.), a black homogeneous peat, with a waxy
Pitch pine (Bot.), any one of several species of pine,
yielding pitch, esp. the Pinus rigida of North America.