Sentence:  Standing foursquare in the heart of the town, at the intersection of the two main streets, a “jog” at each street corner left around the market-house a little public square, which at this hour was well occupied by carts and wagons from the country and empty <WSD>drays</WSD> awaiting hire 
Meaning of the word marked with <WSD> tags:  A low horse-drawn cart, often without sides, and used especially for heavy loads.