#4525 מַסְגֵּר macger {mas-gare'}

 from H5462; TWOT - 1462c; n m

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

 1) a shutting up, locksmith, smith, dungeon, enclosure, builder of
    bulwarks
    1a) locksmith, smith
    1b) dungeon

—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 - smith 4, prison 3; 7

—Exhaustive Concordance (KJV Translation Frequency & Location)