What is "taxiles"

Taxiles (in Greek Tαξίλης or Ταξίλας; lived 4th century BC) was the Greek chroniclers' name for a prince or king who reigned over the tract between the Indus and the Jhelum (Hydaspes) Rivers in the Punjab at the time of Alexander the Great's expedition. His Indian name was Ambhi (or Ambhika, Greek: Omphis), and the Greeks appear to have called him Taxiles or Taxilas, from the name of his capital city of Taxila, near the modern city of Attock, Pakistan.