资料来源 : pyDict

城堡,要塞筑要塞,以要塞防守

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Fortress \For"tress\, n.; pl. {Fortresses}. [F. forteresse, OF.
   forteresce, fortelesce, LL. foralitia, fr. L. fortis strong.
   See {Fort}, and cf. {Fortalice}.]
   A fortified place; a large and permanent fortification,
   sometimes including a town; a fort; a castle; a stronghold; a
   place of defense or security.

   Syn: {Fortress}, {Fortification}, {Castle}, {Citadel}.

   Usage: A fortress is constructed for military purposes only,
          and is permanently garrisoned; a fortification is
          built to defend harbors, cities, etc.; a castle is a
          fortress of early times which was ordinarily a
          palatial dwelling; a citadel is the stronghold of a
          fortress or city, etc.

Fortress \For"tress\, v. t.
   To furnish with a fortress or with fortresses; to guard; to
   fortify. --Shak.

资料来源 : WordNet®

fortress
     n : a fortified defensive structure [syn: {fort}]