A Hebrew and English Lexicon of the Old Testament, more commonly known  as Brown–Driver–Briggs or BDB (from the name of its three authors) is a standard reference for Biblical Hebrew and Biblical Aramaic, first published in 1906. It is organized by (Hebrew) alphabetical order of three letter roots.
A standard lexicon for Biblical Hebrew and Aramaic, known by its authors' names (Brown–Driver–Briggs) or simply BDB, was initially published in 1906. It is structured alphabetically based on three-letter Hebrew root words.