warren

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An area where rabbits live in burrows.
• noun A colony of rabbits.
• noun An enclosure for small game animals.
• noun An overcrowded living area.
• noun A mazelike place where one may easily become lost.

from The Century Dictionary.

• noun A piece of ground appropriated to the breeding and preservation of rabbits or other game: a place where rabbits abound.
• noun In English law, a franchise or place privileged by prescription or grant from the crown, for keeping beasts and fowls of warren, which are hares, rabbits, partridges, and pheasants, though some add quails, woodcocks, and waterfowl.
• noun A preserve for fish in a river.

from the GNU version of the Collaborative International Dictionary of English.

• noun A place privileged, by prescription or grant the king, for keeping certain animals (as hares, conies, partridges, pheasants, etc.) called beasts and fowls of warren.
• noun A privilege which one has in his lands, by royal grant or prescription, of hunting and taking wild beasts and birds of warren, to the exclusion of any other person not entering by his permission.
• noun A piece of ground for the breeding of rabbits.
• noun A place for keeping flash, in a river.

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

• noun The system of burrows where rabbits live.
• noun figuratively A mazelike place of dark alleys etc in which it's easy to lose oneself; especially one that may be overcrowded.

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

• noun United States writer and poet (1905-1989)
• noun a colony of rabbits
• noun an overcrowded residential area
• noun a series of connected underground tunnels occupied by rabbits
• noun United States jurist who served as chief justice of the United States Supreme Court (1891-1974)