məˌchikəˈlāshən, (ˌ)maˌch- noun
( -s )
1.
a. : an opening between the corbels that 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 below
b. : a parapet containing such openings — see battlement illustration
2. : a construction imitating medieval machicolation