The headword is third person singular, aorist indicative active, of kataskh/ptw (cf. kappa 767). Same glossing of it (as kate/skhyen) in Photius and elsewhere. It must be quoted from somewhere: Theodoridis suggests Aeschylus (Supplices 327) or Herodotus (1.137.2, 7.134.1), and there are in truth numerous other possibilities.