Sentence:  Just under the ceiling there were three lunette windows, heavily barred and blacked out in the normal way by centuries of grime. Their bases were on a level with the pavement outside, a <WSD>narrow</WSD> way which was several feet lower than the road behind the house. 
Meaning of the word marked with <WSD> tags:  Having a small width; not wide; having opposite edges or sides that are close, especially by comparison to length or depth.