marram grass

noun
🔊/ˈmærəm ɡrɑːs/
🔊/ˈmærəm ɡræs/
(also marram)
[uncountable]
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  1. a type of grass that grows in sand, often planted to prevent sand dunes from being destroyed by the wind, rain, etc.滩草,沙茅草(用以固沙)
    Word Originmid 17th cent.: from Old Norse marálmr, from marr ‘sea’ + hálmr ‘stalk, stem’.