[n] a street with only one way in or out
cul de sac, dead-end street, impasse
alley, alleyway, arterial, arterial highway, arterial street, artery, Autobahn, autoroute, autostrada, avenue, bar, barrier, belt highway, blank wall, blind gut, block, blockade, blockage, bottleneck, boulevard, box, bypass, byway, camino real, carriagewa