warren
noun [ C ] uk/ˈwɒr.ən/ us/ˈwɔːr.ən/
(also rabbit warren)（地下交错相连的）兔子洞窟
a series of connecting underground passages and holes in which rabbits live
mainly disapproving拥挤且易使人迷路的建筑物（或城区）
a very crowded and confusing building or part of a city in which it is easy to get lost
We wandered through the warren of old streets. 我们漫步在纵横交错的老街上。