n.
Pronunciation: ' nät- ˌ gras
Function: noun
Date: 1538
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 (as Paspalum distichum ) with markedly jointed stems