Where does “τζυκανιστήριον” come from?

τζυκανιστήριον (Ancient Greek) comes from Ancient Greek τζυκανίζω, from Ancient Greek -ίζω, from Proto-Hellenic -íďďō, from Proto-Indo-European -idyéti, from Proto-Indo-European -yéti, from Proto-Indo-European yé-, from Chichewa iye — he, she.

τζυκανιστήριον (Ancient Greek): polo ground, polo stadium