on pitch

: a black or dark viscous substance obtained as a residue in the distillation of organic materials and especially tars

: any of various bituminous substances

: resin obtained from various conifers and often used medicinally

: to cover, smear, or treat with or as if with pitch

: to erect and fix firmly in place

: to throw usually with a particular objective or toward a particular point : such as

: to throw (a baseball) to a batter

: slope

: the distance between any of various things: such as

: distance between one point on a gear tooth and the corresponding point on the next tooth