pitching

PITCH'ING, ppr. Setting; planting or fixing; throwing headlong; plunging; daubing with pitch; setting, as a tune.

1. a. Declivous; descending; sloping; as a hill.

PITCH'ING, n. In navigation, the rising and falling of the head and stern of a ship, as she moves over waves; or the vertical vibration of a ship about her center of gravity.