From Longman Dictionary of Contemporary Englishyoung bloodyoung bloodMAN old-fashioned a fashionable young man → blood
Examples from the Corpus
young blood• It's about time we got some young blood in this company.• But Kit wasn't having some young blood replace his female prizes.• He stopped once to look at the young blood sleeping among the Begonias.• Well, that 25-yard volley makes it two-nil to the young bloods.• Leaning over the parapet to watch the young bloods in the river sprucing up their horses for the fair. 