What is the meaning of "Chamas Taninim Yeinam"?
Rashi (citing Targum Onkelos): 'Their cup 1 of their feast of punishment is like the venom of serpents'.
Seforno: Those clusters 4 of wine
What is the meaning of 'Rosh Pesanim Achzar"?
Rashi: The head of a cruel cobra'.
Targum Yonasan: 'And they are cruel like the head of cobras'.