1. a network of interconnecting rabbit burrows
2. a densely populated or crowded area with many narrow passages
3. an area of land where rabbits breed or are kept
Usage: historical

Examples

• The rabbits disappeared into their underground warren.
• We discovered an extensive warren beneath the hillside.
• The old city was a warren of narrow streets and alleys.
• She got lost in the warren of corridors in the hospital.
• The apartment building was a warren of small, cramped units.
• Medieval lords maintained rabbit warrens for hunting.
• The detective navigated the warren of back streets.