not destroyed by treading; a name given to a plant that can grow in trodden paths, knot-grass; polygonum aviculare :-- Pilogonus et sanguinaria ðæt is unfortredde, Wrt. Voc. i. 68, 66. Unfortrædde. Ðeós wyrt ðe man proserpinacam and óðrum naman unfortredde nemneþ, heó bið cenned gehwǽr on begánum stówum, Lchdm. i. 112, 4-7. [Cf. way-grass, E. D. S. Plant Names: O. H. Ger. wege-trat centenodia; umbi-trat serpinacia; ana-tret proserpinaca.]