noun🔗ShareA 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."The ancient mountains served as natural fortresses, protecting the valley from invaders. "architecturemilitarybuildingwarplaceChat with AIVocabulary GamePractice Reading
noun🔗ShareA position that, if obtained by the weaker side, will prevent penetration by the opposing side, generally achieving a draw."The students, outnumbered by the other team, established fortresses in the corners of the playing field, preventing the opposing team from scoring and achieving a draw. "militarypositionwararchitectureChat with AIVocabulary GamePractice Reading
