noun Date: 1538 a cosmopolitan prostrate weed ( Polygonum aviculare ) of the buckwheat family with jointed stems, prominent sheathing stipules, and minute flowers, any of several grasses (as Paspalum distichum ) with markedly jointed stems
KNOTGRASS
Meaning of KNOTGRASS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012