Machicolation
Machicolation , noun
[Compare Late Latin machicolamentum, machacolladura, French mâchicolis, mâchecoulis; perh. from French mèche match, combustible matter + Old French coulis, couleis, flowing, from Old French & French couler to flow. Compare Match for making fire, and Cullis.]
1.
(Military Architecture) An opening between the corbels which support a projecting parapet, or in the floor of a gallery or the roof of a portal, for shooting or dropping missiles upon assailants attacking the base of the walls. Also, the construction of such defenses, in general, when of this character. See Illusts. of Battlement and Castle.
2.
The act of discharging missiles or pouring burning or melted substances upon assailants through such apertures.