Sentence:  Times Square , when I ascended to it with my fellow <WSD>subway</WSD> travellers ( all dressed as if for a huge wedding in a family of which we were all distant members ) , was nearly impassable , the sidewalks swarming with celebrants , with bundled up sailors and soldiers already hugging their girls and their rationed bottles of whiskey . 
Meaning of the word marked with <WSD> tags:  an electric railway operating below the surface of the ground (usually in a city)