#2157 זַמְזֹם Zamzom {zam-zome'}

 from H2161; TWOT - n/a; n pr m

—Hebrew Word Study (Transliteration-Pronunciation Etymology & Grammar)

 Zamzummims = "plotters"
 1) the Ammonite name for the people who by others were called Rephaim,
    and were described as a numerous nation of giants; perhaps the same
    as 'Zuzim'

—Brown-Driver-Briggs (Old Testament Hebrew-English Lexicon)

—Strong's (Hebrew & Chaldee Dictionary of the Old Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - Zamzummims 1; 1

—Exhaustive Concordance (KJV Translation Frequency & Location)