Dictionary entry

πιστικός

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

*† πιστικός, -ή, -όν (πίστις),

1. having the gift of persuasion (Plat., Gorg., 455 A).

(a) of persons, faithful, trusty (Plut.);

(b) of things, trustworthy, genuine: νάρδος π., Mk 14:3, Jo 12:3.†