#7448 רֶסֶן recen {reh'-sen}

 from an unused root meaning to curb; TWOT - 2180a; n m

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

 1) something that restrains, halter, jaw
    1a) halter
        1a1) of restraint thrown off (fig)
    1b) jaw (of crocodile)

—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 - bridle 4; 4

—Exhaustive Concordance (KJV Translation Frequency & Location)