[See WORT.] a. The common knot-grass (Polygonum aviculare). b. pl. Lindleys name for the N.O. Illecebraceæ.
1845. Lindley, Veg. Kingd. (1853), 499. Order Illecebraceæ Knotworts.
1864. Prior, Plant-n., Knot-grass, or Knot-wort, the centinode, from its trailing jointed stems and grass-like leaves.