| 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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