Boyd’s Bible Dictionary:
(man of the chamber). Officer in charge of the king’s chamber (2 Kings 23:11; Esther 1:10,12,15; Dan. 1:8-11). A more dignified office ( Acts 12:20; Rom. 16:23).
Concise Bible Dictionary:
1. Eunuch who had care of the king’s wives and concubines (2 Kings 23:11; Esther 1:10-15; Acts 12:20).
2. Chamberlain, that is, the treasurer or steward of the City of Corinth, whose salutations Paul sent to Rome (Rom. 16:23).
Strong’s Dictionary of Greek Words: