Sentence:  When he turned into the highway that led to the outskirts of the <WSD>city</WSD> and then rose toward home , he had to pull over to the curb and wait for a few minutes , sucking in air and squinting and blinking his eyes to clear them of tears . 
Meaning of the word marked with <WSD> tags:  a large and densely populated urban area; may include several independent administrative districts