신석기가 · 신석기를
Neolithic stone tools; the Neolithic (New Stone Age)
Example
신석기 시대 사람들은 농사를 짓기 시작했어요.
People in the Neolithic era began farming.
Word parts
신 new+석 stone+기 tool, vessel
Literally 'new stone tools' — polished stone tools.
Good to know
Watch the pronunciation: 신석기 sounds like [신석끼].