Strong's #706: 'arba`tayim (pronounced ar-bah-tah'-yim)
dual of 702; fourfold:--fourfold.
Brown-Driver-Briggs Hebrew Lexicon:
ּּ
'arba‛tayim
1) fourfold
Part of Speech: adverb
Relation: dual of H702
Usage:
This word is used 1 times:
2 Samuel 12:6: "And he shall restore the lamb fourfold, because he did this"