1) Asylum 2) Protected place 3) Refuge 4) Refuge from attack 5) Sanctuary 6) Science fiction book series 
Safehold is a science fiction book series by David Weber, which currently consists of seven titles, the latest of which has been published in February 2014. The series is mostly set around the 31st century, on a distant world dubbed `Safehold` where a group of humans has hidden themselves from an alien race known as the Gbaba. When first contact.....
[n] - a refuge from attack
noun a refuge from attack