1. any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine; [syn: dock, sorrel, sour grass]
WordNet (r) 3.0 (2006):
sour grass
n 1: any of certain coarse weedy plants with long taproots,
sometimes used as table greens or in folk medicine [syn:
dock, sorrel, sour grass]