μνημονεῖον
From LSJ
συνερκτικός γάρ ἐστι καὶ περαντικός, καὶ γνωμοτυπικὸς καὶ σαφὴς καὶ κρουστικός, καταληπτικός τ' ἄριστα τοῦ θορυβητικοῦ → he's intimidative, penetrative, aphoristically originative, clear and aggressive, and superlatively terminative of the obstreperative
English (LSJ)
or μνημόν-ιον, τό, A registry, PRein.18.8 (ii B. C.), POxy.1282.22 (i A. D.), etc.
Greek (Liddell-Scott)
μνημονεῖον: τό, = τῷ προηγ., Μαρτύρ. Ἁγ. Φιλεταίρου 28.