fortress

fortress definitions

verb
  • To furnish with a fortress or with fortresses; to guard, to fortify. 

noun
  • A fortified place; a large and permanent fortification, sometimes including a town; for example a fort, a castle; a stronghold; a place of defense or security. 

  • A position that, if obtained by the weaker side, will prevent penetration by the opposing side, generally achieving a draw.