A tropical American plant(Agave fourcroydes) having large, thick, sword-shaped leaves that yield a coarse reddish fiber used in making rope and twine.

• 剑麻，黑纳金树产于美洲热带地区的（龙舌兰）植物。其叶大、厚，呈剑状，淡红色的叶纤维粗状，可制粗绳和麻绳