#4401 מַלְאָכִי Mal`akiy {mal-aw-kee'}

 from the same as H4397; TWOT - n/a; n pr m

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

 Malachi = "My messenger"
 1) the prophet who wrote the last book of the Old Testament; nothing
    else is known

—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 - Malachi 1; 1

—Exhaustive Concordance (KJV Translation Frequency & Location)