Upvote:2
Most likely the Dane Axe, as seen here:
https://berloga-workshop.com/blog/342-dane-axe.html.
And possibly backed up here:
https://www.sciencealert.com/archaeologists-uncovered-one-of-the-biggest-viking-axes-ever.
Though the most likely answer is actually a Poleaxe, like a Bardiche.