1N-COUNT [oft n NOUN]兔子窝 A warren is a group of holes in the ground which are connected by tunnels and which rabbits live in. 兔子窝
2N-COUNT 过道狭窄的建筑;街道狭窄而密集的街区 If you describe a building or an area of a city as a warren, you mean that there are many narrow passages or streets. 过道狭窄的建筑;街道狭窄而密集的街区