Sentence:  Nanny Broome was looking up at the <WSD>outer</WSD> wall. 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 narrow way which was several feet lower than the road behind the house. 
Meaning of the word marked with <WSD> tags:  Farther from the centre of the inside.