جرثجِرِّيثٌ A kind of fish, (S, Mgh, K,) well known, (TA,) also called جِرِّىٌّ and صِلَّوْرٌ, (Mgh, TA,) resembling a serpent, called in Persian مَارْ مَاهِى [snake-fish, or eel]; forbidden to be eaten by the Jews: whether it be lawful to the Muslims is disputed: (TA:) قِرِّيثٌ is a dial. var. (S in art. قرث.)