purpure

from The Collaborative International Dictionary of English v.0.48

Purpure \Pur"pure\, n. [L. purpura purple. See {Purple}.] (Her.)
   Purple, -- represented in engraving by diagonal lines
   declining from the right top to the left base of the
   escutcheon (or from sinister chief to dexter base).
   [1913 Webster]