Tunc rex projecit a se in directum Bipennem suam quod est Francisca, etc. (Gesta Franc. in tom. ii. p. 554.)
The form and use of this weapon are clearly described by Procopius (in tom. ii. p. 37 [Bell. Goth. 1. u. c. 25, tom. ii. p. 247, 248, ed. Bonn]). Examples of its national appellation in Latin and French may be found in the Glossary of Durange and the large Dictionnaire de Trevoux.