A piece of land prepared for playing a game (noun)
WordNet. Princeton University. 2010.
Use "athletic field" in a sentence
"We passed sleepy storefronts—a barbershop, a stationery store, a bank—then picked up speed as we curved around the campus of Randolph-Macon College with its Georgian buildings and its frosted athletic field peopled at this early moonlit hour by a row of varicolored football sleds."