Sentence:  In the Contrada della Pace there remains a very bold fragment of a castle tower. It is built of very roughly-jointed stone, and is perfectly plain till near the top, where it has a bold <WSD>machicolation</WSD> with tall square angle-turrets, the whole battlemented with a forked battlement. 
Meaning of the word marked with <WSD> tags:  A projecting parapet with a series of such openings.