Brún-ecg

According to the Old English Dictionary:

brún-ecg

adj. [brún brown, ecg an edge] Brown-edged; nigra acie præditus :-- Byrhtnóþ bræd bill of scéðe, brád and brúnecg Byrhtnoth drew his battle-axe from its sheath, broad and brown of edge, Byrht. Th. 136, 38; By. 163: Beo. Th. 3096; B. 1546. brun-ecg