FASTNESS


Meaning of FASTNESS in English

fast ‧ ness /ˈfɑːstnəs, ˈfɑːstnɪs $ ˈfæst-/ BrE AmE noun [countable] literary

a place that is safe because it is difficult to reach SYN stronghold :

mountain fastnesses

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.