ἱλαστήριον
From LSJ
ὕπνος δεινὸν ἀνθρώποις κακόν → sleep is a terrible evil for humans (Menander, Sententiae monostichoi 1.523)
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: τό1) умилостивительная жертва NT;
2) очистилище, золотая крышка или навес над Ковчегом Завета NT.
