This might be just a supplemental entry adding to an entry in the Main Volume.
níd-ling
.Add: a captive :-- Hit gelamp þ̵ Langbeardisce men gehergedon .xl. neadlinga dum fere quadringentos captivos Longobardi tenuissent, Gr. D. 232, 24. v. hæft-nídling.
Cite the scanned version of the original dicionary like this:
Toller, T. Northcote, and Joseph Bosworth. "níd-ling." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth : Supplement. Oxford: Clarendon Press, 1921. 65.
, es; m.I.one who serves of necessity, a slave, bondman :-- Gif ðú fioh tó borge selle ðínum geféran ðe mid ðé eardian wille, ne niéde ðú hine swá niédling (MS. H. nýdling), L. Alf. 35 ; Th. i. 52, 22. Hié on cnihtháde wǽron óðerra manna niédlingas in youth they had been the bondmen of others, Ors. 2, 2 ; Swt. 66, 17. Se æðeling bebeád ðæt hié ða consulas and witan him beforan drifen swá swá niédlingas, ðæt heora bismer ðý máre wǽre, 3, 8 ; Swt. 122, 7. Hý ealle tó nýdlingum him gedydon, 1, 5 ; Swt. 34. 34. Wæterberere oððe nédlungum lixarum, Wrt.