Frombear +‎grass.

beargrass (countable anduncountable,pluralbeargrasses)

1. Xerophyllum tenax, agrasslikeperennial closely related tolilies, formerly used inbasketweaving by theNative Americans.
2. Ayucca plant, thesilkgrass orAdam's needle (Yucca spp.,Nolina spp.)

• (Xerophyllum tenax):squaw grass,soap grass,quip-quip,Indian basket grass

•  Xerophyllum tenax on Wikipedia.Wikipedia
•  Xerophyllum tenax on Wikispecies.Wikispecies
•  Category:Xerophyllum tenax on Wikimedia Commons.Wikimedia Commons
• “beargrass”, inOneLook Dictionary Search.