What does armorial mean?
The definition of armorial
Ar*mo”ri*al, a.
Etym: [F. armorial, fr. armoiries arms, coats of arms, for armoieries, fr. OF. armoier to paint arms, coats of arms, fr. armes, fr. L. arma. See Arms, Armory.]

Belonging to armor, or to the heraldic arms or escutcheon of a family. Figures with armorial signs of race and birth. Wordsworth. Armorial bearings. See Arms, 4.