Warren Definition

wôrən, wŏr-

noun

A space or limited area in which rabbits breed or are numerous.

Webster's New World

A piece of land enclosed for the breeding of game.

Webster's New World

A colony of rabbits.

American Heritage

Any building or group of buildings crowded like a rabbit warren.

Webster's New World

An overcrowded living area.

American Heritage

Synonyms:

pronoun

Wiktionary

A community in Manitoba.

Wiktionary

A town in New South Wales.

Wiktionary

Wiktionary

An unincorporated community in Kentucky.

Wiktionary

Other Word Forms of Warren

Singular:

warren

Plural:

warrens

From Middle English warenne, from Anglo-Norman and Old Northern French warenne, from Old French guarenne, garenne, probably from a Germanic *warinne "game park", from the root *war- of Proto-Germanic *warjanÄ… (“ward off, defend against") (cf. also Old French warir, guarir, a borrowing from this Germanic root). Alternatively the Old French may have derived from a Gaulish varenna (“enclosed area"), related to varros (“post").

From Wiktionary
Two different Norman surnames, one from a Germanic given name war(in) "guard", another from a place La Varenne "the game park" in Normandy.

From Wiktionary
Middle English warenne from Old North French enclosure wer-⁴ in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition