for·ti·fi·ca·tion 
/ˌfoɚtəfəˈkeɪʃən/ noun
plural for·ti·fi·ca·tions /ˌfoɚtəfəˈkeɪʃən/ noun 1 [noncount] : the act of building military defenses to protect a place against attack : the act of fortifying something
▪ They began the fortification and reconstruction of the city. 2 [count] : a structure (such as a wall or tower) that is built to protect a place — usually plural ▪ The city was protected by massive fortifications.
▪ They began the fortification and reconstruction of the city.
