The story
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A heraldic fur resembling vair, except in the arrangement of the patches or figures: succeeding rows are reversed instead of staggered, so the bases of the panes of each tincture are opposite those of the same tincture in adjoining rows. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.