Tet·ter·wort n. Bot. A plant used as a remedy for tetter, -- in England the calendine, in America the bloodroot.
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tetterwort
n : perennial woodland native of North America having a red root
and red sap and bearing a solitary lobed leave and white
flower in early spring and having acrid emetic
properties; rootstock used as a stimulant and expectorant
[syn: bloodroot, puccoon, redroot, Sanguinaria
canadensis]