单词 | knotgrass |
释义 | knotgrassnoun knot·grass ˈnät-ˌgras 1 : a cosmopolitan prostrate weed (Polygonum aviculare) of the buckwheat family with jointed stems, prominent sheathing stipules, and minute flowers broadly : any of several congeneric plants 2 : any of several grasses (such as Paspalum distichum) with markedly jointed stems |
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