The newest martel is actually an army hammer utilized in disagreement, and the hammer can be found below which name inside old goes. The origin of your own keyword are regarding the Foreign language ‘gyron’, a good triangualr bit of content sewed on the a garment. Gyronny is the whole secure becoming divided like that, first in a combination then for each and every saltire (diagonally), and so the secure try split into eight compartments.