Pronunciation : Fitz
Part of Speech : n.
Etymology : [OF. fils, filz, fiz, son, F. fils, L. filius. See Filial.]
Definition : Defn: A son; -- used in compound names, to indicate paternity, esp. of the illegitimate sons of kings and princes of the blood; as, Fitzroy, the son of the king; Fitzclarence, the son of the duke of Clarence.
Source : Webster's Unabridged Dictionary, 1913