ἱλαστήριον
From LSJ
Ἴσος ἴσθι πᾶσι, κἂν ὑπερέχῃς τῷ βίῳ → Quamvis superior sorte, da te aequum omnibus → Sei allen gleich, auch wenn du reicher bist
English (Strong)
neuter of a derivative of ἱλάσκομαι; an expiatory (place or thing), i.e. (concretely) an atoning victim, or (specially) the lid of the Ark (in the Temple): mercyseat, propitiation.
Russian (Dvoretsky)
ἱλαστήριον: τό
1) умилостивительная жертва NT;
2) очистилище, золотая крышка или навес над Ковчегом Завета NT.