The spear or lance, together with the bow, the sword, the seax and the shield, was the main equipment of the Germanic warriors during the Migration Period and the Early Middle Ages.
The Indogermanisches etymologisches Wörterbuch has *g'haisos (with a palatal velar aspirate), discounting the Avestan form in favour of (tentatively) comparing Sanskrit hḗṣas- 'projectile'.
The form gaois is read in an early runic inscription on the so-called Mos spearhead, dated to the 3rd century, found in Stenkyrka, Gotland.
They carry a spear [hasta] (framea is their name for it), with a narrow and short head, but so sharp and easy to wield that the same weapon serves, according to circumstances, for close or distant conflict.
As for the horse-soldier, he is satisfied with a shield and spear; the foot-soldiers also scatter showers of missiles each man having several and hurling them to an immense distance, and being naked or lightly clad with a little cloak.The term is also used by Eucherius of Lyon, Gregory of Tours and Isidore.