2. (Geol.)
Defn: See Pitchstone. Amboyna pitch, the resin of Dammara australis.
See Kauri.
— 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 luster.
— Pitch pine (Bot.), any one of several species of pine, yielding
pitch, esp. the Pinus rigida of North America.
PITCH
Pitch, v. t. [imp. & p. p. Pitched; p. pr. & vb. n. Pitching.] Etym:
[See Pitch, n.]
1. To cover over or smear with pitch. Gen. vi. 14.
2. Fig.: To darken; to blacken; to obscure. The welkin pitched with sullen could. Addison.
PITCH
Pitch, v. t. Etym: [OE. picchen; akin to E. pick, pike.]
1. To throw, generally with a definite aim or purpose; to cast; to hurl; to toss; as, to pitch quoits; to pitch hay; to pitch a ball.
2. To thrust or plant in the ground, as stakes or poles; hence, to fix firmly, as by means of poles; to establish; to arrange; as, to pitch a tent; to pitch a camp.
3. To set, face, or pave with rubble or undressed stones, as an embankment or a roadway. Knight.
4. To fix or set the tone of; as, to pitch a tune.