a great calamity :-- Hié wordum bǽdon, ðæt him gástbona geoce gefremede wið þeódþreáum (the injuries inflicted by Grendel), Beo. Th. 358; B. 178. Cf. þeód-bealu.
Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "þeód-þreá." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 105.