Any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine.
1The ground produces some sour grass - not a great deal.
2It tastes like other things to eat: dried fruit sometimes, or sour grass, or hazelnuts.
3Take a pound of sour grass (sorrel), remove leaves, wash well, cut and squeeze well.
4There's not a bit of swampy ground or a patch of sour grass on the farm, he thought bitterly.
5There were patches of that gray moss which blossoms with a tiny red flower, and there was mullein and sour grass.
6The horses and sheep, unaccustomed to the sour grasses of the coast lands of northern Australia, pined and rapidly wasted away.
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