Strong's #1458: gav (pronounced gav)
another form for 1460; the back:--back.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
gav
1) the back
Part of Speech: noun masculine
Relation: another form for H1460
Usage:
This word is used 3 times:
1 Kings 14:9: "and molten images, to provoke me to anger, and hast cast me behind thy back:"
Nehemiah 9:26: "thy law behind their backs, and slew thy prophets which testified"
Ezekiel 23:35: "thou hast forgotten me, and cast me behind thy back, therefore bear thou also thy lewdness"