stronghold
A place built to withstand attack; a fortress.
Other meanings
A place of domination by, or refuge or survival of, a particular group or idea.
“the last stronghold of the Cornish language”
Word history
From Old English "strang".
Where this comes from
This definition is adapted from “stronghold” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.