Sentence:  But, give him port and potent ſack, / From "milkſop" he ſtarts up "Mohack"; / Holds that the happy know no hours; / So through the ſtreets at midnight ſcowers, / Breaks watchmen's heads and chairmen's glaſſes, / And thence proceeds to <WSD>nicking</WSD> ſaſhes; ... 
Meaning of the word marked with <WSD> tags:  To make ragged or uneven, as by cutting nicks or notches in; to deface, to mar.