, es; n. The principal stronghold of a country, one which it has been the work of the country to build [cf. Beo. Th. 135-152; B. 67-76], Beo. Th. 1880; B. 938.
Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "land-geweorc." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 618.