Any of various plants with acidic leaves, especially
User Defined Definitions
"any plant or flower of the genus Oxalis"
"any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine"
"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"
"large sour-tasting arrowhead-shaped leaves used in salads and sauces"
"a horse of a brownish orange to light brown color"