rue
1. rue \'ru:\ vb [ME ruen, fr. OE hre-owan; akin to OHG hriuwan to regret] : to feel penitence, remorse, or regret for : to feel sorrow, regret, or remorse 2. rue n : REGRET, SORROW 3. rue n [ME, fr. MF, fr. L ruta, fr. Gk rhyte-] : a strong-scented perennial woody herb (Ruta graveolens of the fami ly Rutaceae, the rue family) that has bitter leaves used in medicine and is related to the citrus