Seax (Old English pronunciation: [ˈsæɑks]; also sax, sæx, sex; invariant in plural, latinized sachsum) is an Old English word for "knife". ... In heraldry, the seax is a charge consisting of a curved sword with a notched blade, appearing, for example, in the coats of arms of Essex and the former Middlesex.
Vanessa Smith ● 1911d