1. (n.) A passage with only one outlet, as a street closed at one end; a blind alley; hence, a trap.

2. (n.) a position in which an army finds itself with no way of exit but to the front.

3. (n.) Any bag-shaped or tubular cavity, vessel, or organ, open only at one end.

Autobahn US highway access aisle alleyway ambulatory aperture arcade arterial arterial highway arterial street artery autoroute autostrada avenue belt highway blind alley boulevard bypass byway camino real carriageway causeway causey channel chaussee circumferential cloister close colonnade communication conduit connection corduroy road corridor county road court covered way crescent cul-de-sac dead-end street defile dike dirt road drive driveway exit expressway ferry ford freeway gallery gravel road highroad highway highways and byways inlet interchange intersection interstate highway junction lane local road main drag main road mews motorway opening outlet overpass parkway pass passage passageway pave paved road pike place plank road portico primary highway private road railroad tunnel right-of-way ring road road roadbed roadway route nationale row royal road secondary road speedway state highway street superhighway terrace thoroughfare through street thruway toll road township road traject trajet tunnel turnpike underpass wynd