Deuteronomy 2:20

2:20 (That also is accounted a land of Rephaim: Rephaim lived therein before; but the Ammonites call them Zamzummim,
-World English Bible

Other Translation

2:20 (That also was accounted a land of giants: giants dwelt therein in old time; and the Ammonites call them Zamzummims;
-King James Version