Sentence:  The street that is full now of <WSD>traffic</WSD> and parked cars then and for many years drowsed on an August afternoon in the shade of the curbside trees , and silence was a weight , almost palpable , in the air . 
Meaning of the word marked with <WSD> tags:  the aggregation of things (pedestrians or vehicles) coming and going in a particular locality during a specified period of time