Webster's 1828 Dictionary
ANACARDIUM
n.The cashew-nut, or marking nut, which produces a thickish, red, caustic, inflammable liquor, which, when used in marking, turns black, and is very durable.
Webster's 1913 Dictionary
ANACARDIUM
An `a *car "di *um, n. Etym: [NL. , fr. Gr. (Bot. )
Defn: A genus of plants including the cashew tree. See Cashew.
The Wordsmith Dictionary