English Dictionary

fortress

/ˈfɔɹ.tɹəs/

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.

The ancient fortress stood tall on the hill.

意味（1）

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.

Like the Mesolithic age of 10,000-8000 B.C., the period 6000-4000 B.C. seems to be one of the fall of fortresses and the rise of pastoral nomadism.

意味（2）

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