Same or similar entry in other lexica. The headword is present middle/passive of ki/dnhmi, third person singular. It is taken by Theodoridis on Photius s.v. (and already Adler) to be quoted from Homer, Iliad 23.227), though in his apparatus he also mentions Euripides, Hecuba 916, where ki/dnatai is a variant in some mss for ski/dnatai. In fact, the present gloss occurs in the scholia to the instance of the headword in Oppian, Halieutica 5.186.
cf. epsilon 2378.