Definition from macmillandictionary.com
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a football/cricket/rugby pitch
a synthetic/artificial/all-weather pitch
Hundreds of fans invaded the pitch at the end of the game.
The fighting between the supporters of the two groups reached a new pitch.
Expertise in these techniques was already at a high pitch.
Many actors have been trained to lower the pitch of their voice.
People are very wary of the obvious sales pitch.
She only had ten minutes to make her pitch for the contract.
The new stallholder had a good pitch on a street corner.
The roof had a steep pitch.