- Also called: allseed a polygonaceous weedy plant, Polygonum aviculare, whose small green flowers produce numerous seeds
- any of several related plants
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for knotgrass
The hedgehog footed through the knotgrass slowly, grubbing with his snout to right and left of him."Wee Tim'rous Beasties"
Among various foods that have been mentioned for it are raspberry, ivy, and knotgrass.
They would not feed on knotgrass and other plants offered to them, and I failed to rear them.
It feeds on low-growing plants, such as knotgrass and dock, and has been reared from the egg in August and September.
The food comprises groundsel, knotgrass, chrysanthemum, and various other plants.