herb-of-grace

[ urb-uh v-greys, hurb- ]
/ ˈɜrb əvˈgreɪs, ˈhɜrb- /

noun, plural herbs-of-grace. Archaic.

rue2.

Origin of herb-of-grace

1540–50; so called from the association of rue2 (the plant name) with rue1 (repent, repentance)

British Dictionary definitions for herb of grace

herb of grace

noun

an archaic name for rue 2