The headword, extracted from the quotation given, is the future active infinitive of the verb o)fliska/nw (I owe, am liable to pay, incur a fine); see generally LSJ s.v. Other forms of this verb are found at omicron 1013, omicron 1015, omicron 1018, omicron 1019, omega 279, and pi 977, with cognate substantives at omicron 1014 and omicron 1017.
[1] The gloss is the aorist passive infinitive of the verb katadika/zw, I give judgment against; see generally LSJ s.v. The mismatch of tenses is found already in the Aristophanic scholia.
[2] Aristophanes, Clouds 777, where Socrates poses this legal conundrum for Strepsiades to solve (web address 1); followed here by comment from the scholia there. On the importance of live witness testimony in Athenian court proceedings of this era (and the corresponding unimportance of written documentation) see Dover, p. 195.
[3] The father of Aristogeiton (Develin person no. 397) was Kydimachos, who died as a debtor in prison; cf. alpha 3912, alpha 3913, and Demosthenes 25.53-6 (web address 2).