κωπητήρ
From LSJ
τὸ γὰρ μυστήριον ἤδη ἐνεργεῖται τῆς ἀνομίας· μόνον ὁ κατέχων ἄρτι ἕως ἐκ μέσου γένηται. (2Thess 2:7) → For the mystery of lawlessness is already at work — just at work until the one who is now constraining it is taken out.
English (LSJ)
ῆρος, ὁ, = τροπωτήρ, Hermipp.54, Agath.5.21, cf. Poll.1.92; v. ἐπικωπητήρ.
Greek (Liddell-Scott)
κωπητήρ: ῆρος, ὁ, παρ’ Ἑρμίππ. ἐν «Στρατιώταις» 5, κατὰ τὴν ἑρμηνείαν τοῦ Ἡσυχ. ὁ σκαλμὸς τῆς κώπης, οὕτω καὶ ὁ Πολυδ. Αϳ, 93 (τὸν τόπον δὲ τὸν πρὸς ταῖς κώπαις κωπητῆρα (οὕτως ἀναγνωστέον) καλοῦσιν)· ὁ Ἡσύχ. ἔχει καὶ «ἐπικωπητήρ· τροπωτήρ».