Rumex obtusifolius

(redirected from Butter dock)
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Noun1.Rumex obtusifolius - European dock with broad obtuse leaves and bitter rootstock common as a weed in North AmericaRumex obtusifolius - European dock with broad obtuse leaves and bitter rootstock common as a weed in North America
sour grass, dock, sorrel - any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine