Source : Webster's Revised Unabridged Dictionary (1913)

Stavesacre \Staves"a`cre\, n. [Corrupted from NL. staphis agria,
   Gr. ? dried grape + ? wild.] (Bot.)
   A kind of larkspur ({Delphinium Staphysagria}), and its
   seeds, which are violently purgative and emetic. They are
   used as a parasiticide, and in the East for poisoning fish.