ullr, the onion of war

Ullr, the onion of war! We carried the seeds of the Fyrisvellir on the mountains of the hawks during all of Hakon’s life; now the enemy of the people has hidden the flour of Fróði’s hapless slaves in the flesh of the mother of the enemy of the giantesses.

translation in prose, author Norwegian skald Eyvind Finnson (d. ca 990)
from Wikipedia’s entry on kenning