a. Her. [a. F. vertant, = L. vertent-, vertens, pres. pple. of vertĕre: see VERT v.1] Bending, curving.
1688. R. Holme, Armoury, II. 473/1. He beareth Argent, eight Leaves, the Stalks conjoyned and contrary bowed . But the most compendious, is to blazon them conjoynd dorse endorse: though good Artists will say, conjoyned and vertant to the Dextre and Sinister.
c. 1828. Berry, Encycl. Her., I. Gloss., Vertant and Revertant, or Verted and Reverted, the same as flexed and reflexed, or bowed embowed, that is formed like the letter S reverted. [Hence in later Dicts.]