A type of corrosion of a metal surface resulting in cavities. It is also one of the damaging effects of long-term cavitation in centrifugal pumps that occurs on the surface of impellers.
Geology and Earth Sciences
The digging of a pit; in Scotland, mining an outcrop by making shallow pits. In exploration, sampling of alluvial sediments by shallow (down to 15–20 m) trial pits.