[ = ? yrsen- = ísern-: cf, Wülck. Gl. 142, 2 irsenhelm cassis, where Wrt. Voc. i. 35, 4 has iren], e; f. An iron box :-- Yrse-binne (cf. hunigbinna, 264, 15), Anglia ix. 265, 1.
Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "yrse-binn." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 13.