Boyd’s Bible Dictionary:
(chief of magi). An important office at the court of Babylonia (Jer. 39:3,13).
Concise Bible Dictionary:
This is not a proper name, but the title of Nergal-sharezer (Jer. 39:3, 13). It has been supposed by some to signify “chief of the Magi,” and by others, “chief priest.” On the monuments it is given as ruba eniga, which has been interpreted “the glorious prince.” This would be an appropriate title if Nergal-sharezer is the same person who became Neriglissar the king.
Strong’s Dictionary of Hebrew Words:
Meaning:
from 7227 and a foreign word for a Magian; chief Magian; Rab-Mag, a Bab. official
Jackson’s Dictionary of Scripture Proper Names:
chief soothsayer: much melting
Potts’ Bible Proper Names:
Chief of the magi:― a Babylonian official, Jer. 39:3. {Princeps magorum}