So Celsius and the learned Ben Melech explain rosh (Hosea 10:4; Amos 6:12). (See GALL.) Gesenius explains, from the etymology, "poppy heads." Possibly many plants of bitter juice are meant. Rosh grew in grainfields rankly, and bore a berry or fruit. Deuteronomy 29:18; Jeremiah 9:15; Jeremiah 23:15; Lamentations 3:19. Not necessarily poisonous.