Easton's Bible Dictionary
In the New Testament the Greek word Hellenes, meaning literally Greek (as in Acts 16:1,3; 18:17; Romans 1:14 ), generally denotes any non-Jewish nation.
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain.
Easton, Matthew George. Entry for 'Gentiles'. Easton's Bible Dictionary. https://www.studylight.org/dictionaries/eng/ebd/g/gentiles.html. 1897.