Likewise or very similarly in other lexica, from Hesychius onwards. The headword is the aorist active infinitive of a comic coinage e)kperdiki/zw, as used at -- and surely quoted here from -- Aristophanes, Birds 768 (web address 1). The translation above follows that of LSJ; Dunbar ad loc. offers as a possible alternative 'practise partridge tricks' (i.e. with the initial ek- as an intensifier). Either way, the verb became proverbial in Diogenianus and other paroemiographers.
cf. delta 911.