common land

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun UK, Ireland an area of land in the United Kingdom or Ireland that is open to the public at all times and until the 18th century would have been land that was free for anybody to graze their animals on (often shortened to common).
• noun UK, Ireland collectively, all the common land in one of those two countries.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a pasture subject to common use