Sentence:  Fortune favoured us, and we got home without meeting a soul. Once we saw a man, who seemed not quite sober, passing along a street in front of us; but we hid in a door till he had disappeared up an opening such as there are here, steep little closes, or <WSD>wynds</WSD>, as they call them in Scotland. 
Meaning of the word marked with <WSD> tags:  A narrow lane, alley or path, especially one between houses.