1)
What is y"v'Avus"?
1.
Rashi: It is an expression of wallowing in blood and trampling, like "Misboseses b'Damayich" (Yechezkel 16:6) and "Bosesu Es Chelkasi" (Yirmeyah 12:10).
2.
Radak: It is an expression of trampling, like "Bosim b'Tit Chutzos" (Zecharyah 10:5).
2)
What is the meaning of "va'Ashkerem ba'Chamasi"?
1.
Radak: I will give to them to drink the cup of My anger, until Yishkeru (they will get drunk).
3)
What is "Nitzcham"?
1.
Rashi: This is the strength of their success.