sour grass

Noun sour grass has 1 sense

• sour grass(n = noun.plant) dock, sorrel - any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine;
is a kind of herb, herbaceous plant
is a member of genus rumex, rumex
has particulars: garden sorrel, rumex acetosa, sour dock, rumex acetosella, sheep's sorrel, sheep sorrel, bitter dock, broad-leaved dock, rumex obtusifolius, yellow dock, french sorrel, garden sorrel, rumex scutatus