(bound form) a rain cape or coat made of straw, grass, or leaves; also used for the grass used to make such capes

(literary) to cover or thatch with grass; specifically to cover a city wall with grass for protection

perennial herb (Eulaliopsis binata) with narrow leaves, used for making paper, straw rain capes, or sandals; also known as 龙须草 lóng​xū​cǎo