Sentence:  Suburban villas, highway-ſide retreats, / That dread th' encroachment of our growing ſtreets, / Tight <WSD>boxes</WSD>, neatly ſaſh'd, and in a blaze / With all a July ſun's collected rays, / Delight the citizen, who gaſping there, / Breathes clouds of duſt and calls it country air. 
Meaning of the word marked with <WSD> tags:  A small country house.