Plantagenet \p-lanta-genet, pl(a)-ntage-net\ as a boy's name is of Old French origin, and the meaning of Plantagenet is "shoot of broom". Broom is an English flower. The Plantegenet family ruled England in the 13th and 14th centuries, giving the name connotations of ancient high rank. Literary: Victorian novelist Anthony Trollope named his powerful English duke "Plantagenet Palliser".