solitary castle; isolated castle
Refers to a castle standing alone, often in a remote or besieged position. Can carry a literary or historical tone.
The solitary castle stood alone on top of the mountain.
In the isolated castle surrounded by enemies, the soldiers fought desperately.
feeling of helpless isolation; desolation of a fallen person
Standard kanji spelling.
Irregular kanji usage; not recommended for learners.
Compound of 孤 (ko, 'solitary') and 城 (jō, 'castle'). The irregular form 弧城 uses 弧 (arc) instead of 孤, likely a phonetic substitution.