Synonyms:

bhisma–Grandfather Bhisma; drona–the teacher Drona; pramukhatah–in front of; sarvesam–all; ca–also; mahi-ksitam–chiefs of the world; uvaca–said; partha–O Partha (son of Prtha); pasya–just behold; etan–all of them; samavetan–assembled; kurun–all the members of the Kuru dynasty; iti–thus.

Translation:

In the presence of Bhisma, Drona and all other chieftains of the world, Hrsikesa, the Lord, said, Just behold, Partha, all the Kurus who are assembled here.