Sentence:  When he turned into the highway that led to the outskirts of the city and then rose toward home , he had to pull over to the curb and wait for a few <WSD>minutes</WSD> , sucking in air and squinting and blinking his eyes to clear them of tears . 
Meaning of the word marked with <WSD> tags:  a unit of time equal to 60 seconds or 1/60th of an hour