1. plural of warren: underground tunnels and burrows where rabbits live
2. plural of warren: crowded, maze-like areas with many narrow passages
Usage: figurative

Examples

• The hillside was riddled with rabbit warrens.
• We explored the ancient warrens beneath the castle.
• The old city’s warrens of narrow streets confused tourists.
• Foxes often raid rabbit warrens for food.
• The underground warrens provided shelter for the animals.
• Medieval towns had warrens of twisting alleyways.
• The children got lost in the warrens of the old building.