段だん平びら

noun

broadsword; sword

Historical term for a type of broad-bladed sword; rarely used in modern Japanese outside historical or martial contexts.

• 時じ代だい劇げきで、侍さむらいが段だん平びらを振ふるう場ば面めんがある。

  In period dramas, there are scenes where a samurai wields a broadsword.