fastness
fast|ness /f'ɑːstnəs, f'æst-/ (fastnesses)
[N-COUNT] with supp
A fastness is a place, such as a castle, which is considered safe because it is difficult to reach or easy to defend against attack. (LITERARY)
They could have withdrawn into the mountain fastness of Eryri.
[N-COUNT] with supp
A fastness is a place, such as a castle, which is considered safe because it is difficult to reach or easy to defend against attack. (LITERARY)
They could have withdrawn into the mountain fastness of Eryri.