The Collaborative International Dictionary
Gentleman \Gen"tle*man\, n.; pl. Gentlemen. [OE. gentilman nobleman; gentil noble + man man; cf. F. gentilhomme.]
A man well born; one of good family; one above the condition of a yeoman.
One of gentle or refined manners; a well-bred man.
(Her.) One who bears arms, but has no title.
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The servant of a man of rank.
The count's gentleman, one Cesario.
--Shak. -
A man, irrespective of condition; -- used esp. in the plural (= citizens; people), in addressing men in popular assemblies, etc.
Note: In Great Britain, the term gentleman is applied in a limited sense to those having coats of arms, but who are without a title, and, in this sense, gentlemen hold a middle rank between the nobility and yeomanry. In a more extended sense, it includes every man above the rank of yeoman, comprehending the nobility. In the United States, the term is applied to men of education and good breeding of every occupation.
Gentleman commoner, one of the highest class of commoners at the University of Oxford.
Gentleman usher, one who ushers visitors into the presence of a sovereign, etc.
Gentleman usher of the black rod, an usher belonging to the Order of the Garter, whose chief duty is to serve as official messenger of the House of Lords.
Gentlemen-at-arms, a band of forty gentlemen who attend the sovereign on state occasions; formerly called gentlemen pensioners. [Eng.]
Wikipedia
Gentleman Usher is a title for some officers of the Royal Household of the United Kingdom. See List of Gentlemen Ushers for a list of office-holders.
Usage examples of "gentleman usher".
He is supposed to be related to the wife of George Cavendish, who is Wolsey's gentleman usher.
When I asked the gentleman usher what was the usual homage paid to the king of the country, he informed me that you advanced your hand before you, on a level with your face, and snapped your fingers at him.
While he was thus reasoning and resolving with himself, a slardral, or gentleman usher, came from court, commanding my master to carry me immediately thither for the diversion of the Queen and her ladies.
Preceded by a gentleman usher, and followed by a throng of esquires, henchmen, and pages, in superb habiliments, he was accompanied by the Constable of the Tower and Lord Lisle.
And on the professional side of things, the exact and inspired molecular modification to the untraceable poison used on the Gentleman Usher to the Romulan Assembly.
Then followed a gentleman usher, bearing a wand, who made a similar announcement.
He was detained for a short time in the ante-chamber, but when admitted into the inner room by a gentleman usher, he found Catherine alone.