Definition of "platy"

Gules, a saltire argent within a bordure sable bezantée (sic C., but Papworth cites, p. 1069, from A., per saltire gules and sable, a saltire argent, and a bordure of the 2nd platy).

1877, The Reliquary and Illustrated Archaeologist, page 19

[...] fretty gules besanty / here the besants are placed at the intersection of the pieces of the fretty. A similar coat, Or, fretty gules platy, is an old coat of VERDON; and Or, fretty sable platy is the canting coat of PLATT.

1892, John Woodward, George Burnett, A Treatise on Heraldry, British and Foreign: With English and French Glossaries, page 97

Or, a fess dancetty of two points gules masoned argent; on a chief azure a representation of Maidenhead Bridge over water barry wavy in base. 212. Argent, a fess gules between 3 astral crowns azure. 213. Sable platy, a pile barry […]

1965, R. H. Wilmott, Discovering Heraldry

Sable platy, two flaunches argent - Spelman (159). Gules, five lozenges conjoined in bend argent - Raleigh (160).

1983, Charles Boutell, Boutell's Heraldry, Frederick Warne Publishers