from the GNU version of the Collaborative International Dictionary of English
- n. an officer of the crown, who waits upon the sovereign on the day of coronation, and provides requisites for the palace of Westminster, and for the House of Lords during the session of Parliament. Under him are the gentleman of the black rod and other officers. His office is distinct from that of the lord chamberlain of the Household, whose functions relate to the royal housekeeping.
Sorry, no etymologies found.