(Homonym: roux).
1. European strong-scented perennial herb with gray-green bitter-tasting leaves; an irritant similar to poison ivy; SYN. herb of grace, Ruta graveolens.
> 2. Leaves sometimes used for flavoring fruit or claret cup but should be used with great caution: can cause irritation like poison ivy.
Shrubby perennial herb Ruta graveolens, family Rutaceae, native to S Europe and temperate Asia. It bears clusters of yellow flowers. An oil extracted from the strongly scented, blue-green leaves is used in perfumery.

Regret, sorrow

To feel sorrow and regret; to repent