Hellenists, Greek-Jews; Jews born in a foreign country, and thus did not speak Hebrew ( Acts 6:1 ; 9:29 ), nor join in the Hebrew services of the Jews in Palestine, but had synagogues of their own in Jerusalem. Joel 3:6 =Greeks.

These dictionary topics are from
M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition,
published by Thomas Nelson, 1897. Public Domain, copy freely.