gyron: Meaning and Definition of

gy•ron

Pronunciation: ( jī'run, -ron), [key]
— n. Heraldry.
  1. a subordinary having the form of a triangle, usually equal to half a quarter of the escutcheon, with its apex at the fess point.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.