;gen. -mægnes; n. Battle-strength, military power; militaris vis, exercitus stragem faciens :-- Beadumægnes rǽs, grím-helma gegrind the rush of battle-strength, the crash of grim helmets, Cd. 160; Th. 198, 28; Exod. 329.
Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "beadu-mægen." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 7.