byname

noun

1. Any secondary name, particularly

   “1631, John Weever, Ancient Funerall Monuments..., p. 644:”

   “Lions-heart, is... the by-name of K. Richard.”

   “The term surname originally denoted an additional name—that is, one used in addition to an individual’s given name, with no implication that it was hereditary. Across medieval Europe a surname was at first often no more than a byname, an ad-hoc sobriquet that was descriptively true of the individual to whom it was given.”

2. (Germanic)Any secondary name, particularly
3. (Scotland, UK, dialectal)Any secondary name, particularly
4. (archaic)Any secondary name, particularly
5. (archaic)Any secondary name, particularly

   “Some of these by-names... remained many years after to them, and theirs; amongst which Plantagenist was entailed on the Royal bloud of England.”

6. (archaic, historical)Any secondary name, particularly

   “Eutropius... gives him the additional name of Crinitus, perhaps a by-name of his family.”

verb

1. (archaic, transitive)To assign a byname to.