The design was adopted in the Middle Ages in Europe when Norman crusaders returned from the Holy Land....
The word derives from the Old French word machecol, mentioned in Medieval Latin as machecollum, probably from Old French machier 'crush', 'wound' and col 'neck'. Machicolate is only recorded in the 18th century in English, but a verb machicollāre is attested in Anglo-Latin. The Spanish word denoting this structure, matacán, is similarly composed from "matar canes" meaning roughly "killing dogs", the latter being a reference to infidels.
February 5, 2017
"A machicolation (from the French: mâchicoulis, German: Maschikuli, Italian: piombatoio) is a floor opening between the supporting corbels of a battlement, through which stones or other material, such as boiling water or boiling cooking oil, could be dropped on attackers at the base of a defensive wall."