Definition of "armorial"

Mute Memento of that unionIn a Saxon Church survives,Where a cross-legged Knight lies sculpturedAs between two wedded Wives—Figures with armorial signs of race and birth,And the vain rank the Pilgrims bore while yet on earth.

1835, William Wordsworth, The Armenian Lady's Love‎, Stanza 26, lines 151-156

The Metropolitan District Railway did not at any time employ an armorial device on its rolling stock, though one was frequently displayed on its maps and timetables.

1950 June, Michael Robbins, “Heraldry of London Underground Railways”, in Railway Magazine, page 381

Nick found a set of Trollope which had a relatively modest and approachable look among the rest, and took down The Way We Live Now, with an armorial bookplate, the pages uncut.

2004, Alan Hollinghurst, chapter 3, in The Line of Beauty […], 1st US edition, New York, N.Y.: Bloomsbury Publishing

Such a scene would have been depicted by the painters of that day, in the armorial suit of the Greeks and Romans. West's painting was highly approved, and the king is said to have required a copy. From this attempt is to be dated the reform ...

1854, Arthur's Home Magazine, page 72

The guides point out to you a magnificent suit of equestrian armor,[...] Near it are two male figures of the youths, Henry and Charles, sons of Charles I, both clad in the armorial suits worn by these lads. The suits of armor worn by the figures generally, are not those of the persons whose names they bear, and serve but to indicate the style of the armour used in different periods.

1857, Warren Parsons Isham, Magazine of Travel, page 99