- (v.t.) To furnish with a fortress or with fortresses; to guard; to fortify.
- (n.) A fortified place; a large and permanent fortification, sometimes including a town; a fort; a castle; a stronghold; a place of defense or security.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). fortress. Retrieved September 25, 2026, from http://smartdefine.org/fortress/definitions/2009756 |
| Chicago | Webster's. 2011. "fortress" http://smartdefine.org/fortress/definitions/2009756 (accessed September 25, 2026). |
| Harvard | Webster's 2011, fortress, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/fortress/definitions/2009756>. |
| MLA | Webster's. "fortress" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/fortress/definitions/2009756> |