Sentence:  Behind flock'd wrangling up a piteous crew, / Greeted of none, disfeatur'd and forlorn— / Cowards, who were in sloughs interr'd alive: / And round them still the wattled <WSD>hurdles</WSD> hung / Wherewith they stamp'd them down, and trod them deep, / To hide their shameful memory from men. 
Meaning of the word marked with <WSD> tags:  A sled or crate on which criminals were formerly drawn to the place of execution.