The formation of pits on a surface because of corrosion. / (archaeology) The digging of a pit.

present participle of pit

plural of pitting

A seed inside a fruit; a stone or pip inside a fruit. / A shell in a drupe containing a seed.

(transitive) To make pits in; to mark with little hollows. / (transitive) To put (an animal) into a pit for fighting. / (transitive) To bring (something) into opposition with something else.

(informal) A pit bull terrier.

A hole in the ground. / (motor racing) An area at a racetrack used for refueling and repairing the vehicles during a race.

(transitive) To remove the stone from a stone fruit or the shell from a drupe.

Initialism of personal income tax. / (computing) Initialism of programmable interval timer.

Abbreviation of Pittsburgh.