, es; m. A brother from the same father; frāter ex eōdem patre ŏriundus :-- Ic fram ðé wearþ fæderenbróðrum exter factus sum fratribus meis, Ps. Th. 68, 8.
Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "fæderen-bróðor." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 263.