Migration Period spear

The spear or lance, together with 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 pre-migration term reported by Tacitus is framea, who identifies it as "hasta"; The native term for "javelin, spear" was Old High German gêr, Old English gâr, Old Norse geirr, apparently from proto-Germanic *gaizaz. The names Genseric, Radagaisus indicate Gothic gaisu besides gairu.

Latin gaesum, gaesus, Greek γαῖσον was the term for the lance of the Gauls. The Avestan language has gaêçu "lance bearer" as a likely cognate. The Celtic word is found e.g. in the name of the Gaesatae. Old Irish has gae "spear". Proto-Germanic *gaizaz would derive from proto-Indo-European language *ghaisos, although loan from Celtic has also been considered, in which case the PIE form would be *gaisos. The Indogermanisches etymologisches Wörterbuch has *g'haisos (with a palatal velar aspirate), discounting the Avestan form in favour of (tentatively) comparing Sanskrit hḗṣas- "projectile".

...
Wikipedia