Boyu or Boyau: How To spell?
The word Boyu is misspelled against Boyau, a noun meaning "A winding or zigzag trench forming a path or communication from one siegework to another, to a magazine, etc."
The word Boyu is misspelled against Boyau, a noun meaning "A winding or zigzag trench forming a path or communication from one siegework to another, to a magazine, etc."