pitting

To make pits in; to mark with little hollows.

“Exposure to acid rain pitted the metal.”

To put (an animal) into a pit for fighting.

To bring (something) into opposition with something else.

“Are you ready to pit your wits against one of the world's greatest puzzles?”

To return to the pits during a race for refuelling, tyre changes, repairs etc.

To remove the stone from a stone fruit or the shell from a drupe.

“One must pit a peach to make it ready for a pie.”

The formation of pits on a surface because of corrosion.

The digging of a pit.

“Test pittings were carried out prior to the main excavation.”