buck
Bucks are men about town. Perhaps in lieu of a better example, you could consider bucks the classic frat boys of the Regency era.
1811 Vulgar Tongue
Buck — A blind horse; also a gay debauchee.
A Buck of the First Head — One who in debauchery surpasses the rest of his companions, a blood or choice spirit. There are in London divers lodges or societies of Bucks, formed in imitation of the Free Masons: one was held at the Rose, in Monkwell-street, about the year 1705. The president is styled the Grand Buck. A buck sometimes signifies a cuckold.
Merriam-Webster
A male human being : man : a dashing fellow : dandy
(It is interesting to see dandy used in the definition. In many Regency set novels you will not see the terms used together! More on dandies next week…)
