aGyronny(Her) Covered with gyrons, or divided so as to form several gyrons; -- said of an escutcheon.
Century Dictionary and Cyclopedia
gyronnyIn heraldry, divided into a number of triangular parts of two different tinctures. The points of all the triangles meet at the fesse-point. The number of triangles must be stated in the blazon: as, gyronny of eight, or and gules. Also written gironné.
Webster's Revised Unabridged Dictionary
Gyronny of eight pieces, azure, argent, and gules.
"The Manual of Heraldry; Fifth Edition" by Anonymous