Dictionary entry

δεῖνα

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

** δεῖνα, ὁ, ἡ, τό (gen. -νος, dat. -νι, acc. -να),

[in Aq.: Ru 4:1, I Ki 21:2 (3) (Sm. also), IV Ki 6:8 *;]

such an one, a certain one, whom one cannot or will not name: Mt 26:18.†