[医] 血根

[ noun ]
perennial woodland native of North America having a red root and red sap and bearing a solitary lobed leaf and white flower in early spring and having acrid emetic properties; rootstock used as a stimulant and expectorant
<noun.plant>

Redroot \Red"root`\ (r?d"r?t`), n. (Bot.)
A name of several plants having red roots, as the New Jersey
tea (see under {Tea}), the gromwell, the bloodroot, and the
Lachnanthes tinctoria, an endogenous plant found in sandy
swamps from Rhode Island to Florida.

Bloodroot \Blood"root`\, n. (Bot.)
A plant ({Sanguinaria Canadensis}), with a red root and red
sap, and bearing a pretty, white flower in early spring; --
called also {puccoon}, {redroot}, {bloodwort}, {tetterwort},
{turmeric}, and {Indian paint}. It has acrid emetic
properties, and the rootstock is used as a stimulant
expectorant. See {Sanguinaria}.

Note: In England the name is given to the tormentil, once
used as a remedy for dysentery.