#0521 אַמָּה 'ammah (Aramaic) {am-maw'}

 corresponding to H0520; TWOT - 2582; n f;

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

 1) cubit - a measure of distance (the forearm), roughly 18 in (.5 m)

—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 - cubit 4; 4

—Exhaustive Concordance (KJV Translation Frequency & Location)