for·ti·fi·ca·tionBrE/ˌfɔːtɪfɪˈkeɪʃn/NAmE/ˌfɔːrtɪfɪˈkeɪʃn/noun[C, usually pl.]atower, wall, gunposition, etc. builttodefendaplaceagainstattack碉堡;围墙;炮台;防御工事◆therampartsandfortificationsoftheOldTown旧城区的城墙和城堡[U]theactoffortifyingormakingsthstronger筑城;设防;加强◆plansforthefortificationofthecity城市设防计划