length of a blade / acrobatic act of walking barefoot on a sword

extraordinary, unusual

emergency

very; extremely / exceedingly; tremendously

long / (time) long, lengthy

a sword, a katana / a scalpel, such as that used by a surgeon / a kind of bronze or copper money in ancient China, shaped a bit like a sword

(weaponry) a single-edged sword, such as a katana / a small single-edged blade

sword, knife, blade

katana (Japanese traditional sword) / blade

long / lengthy