From WordNet (r) 3.0 (2006) [wn]:
Warren
n 1: United States writer and poet (1905-1989) [syn: Warren,
Robert Penn Warren]
2: United States jurist who served as chief justice of the
United States Supreme Court (1891-1974) [syn: Warren, {Earl
Warren}]
3: a series of connected underground tunnels occupied by rabbits
[syn: warren, rabbit warren]
4: an overcrowded residential area [syn: warren, {rabbit
warren}]
5: a colony of rabbits
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Warren \War"ren\ (w[o^]r"r[e^]n), n. [OF. waresne, warenne,
garene, F. garenne, from OF. warer, garer, to beware, to take
care; of Teutonic origin; cf. OHG. war[=o]n (in comp.), OS.
war[=o]n to take care, to observe, akin to E. wary.
[root]142. See Wary.]
[1913 Webster]
1. (Eng Law)
(a) 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. --Burrill.
(b) 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. --Spelman.
[1913 Webster]
They wend both warren and in waste. --Piers
Plowman.
[1913 Webster]
Note: The warren is the next franchise in degree to the park;
and a forest, which is the highest in dignity,
comprehends a chase, a park, and a free warren.
[1913 Webster]
2. A piece of ground for the breeding of rabbits.
[1913 Webster]
3. A place for keeping flash, in a river.
[1913 Webster]