1. to feel sorrow, remorse, or regret for (one's own wrongdoing, past events with unpleasant consequences, etc.)
Any rutaceous plant of the genus Ruta , especially R. graveolens, an aromatic Eurasian shrub with small yellow flowers and evergreen leaves which yield an acrid volatile oil, formerly used medicinally as a narcotic and stimulant
Hiding in the shade
Lost flotsam from another world
Do they ever rue their exodus?