1 : large sour-tasting arrowhead-shaped leaves used in salads and sauces
2 : any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine
3 : any plant or flower of the genus Oxalis
4 : East Indian sparsely prickly annual herb or perennial subshrub widely cultivated for its fleshy calyxes used in tarts and jelly and for its bast fiber
