Saint-Ignatius's-bean
noun
Saint-Ig·na·tius's-bean
| \ -ig-ˈnā-sh(ē-)əs-
\
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Medical Definition of Saint-Ignatius's-bean
: the greenish straw-colored seed of a Philippine woody vine of the genus Strychnos (S. ignatii) that is like nux vomica in its action and uses
— called also Ignatius bean