Θύμβρις
ἐπ' αὐτὸν ἥκεις τὸν βατῆρα τῆς θύρας → you've come to the crux of the matter, come to the point, hit the nail on the head, you've come to the very threshold of the door, you are come to the very threshold of the door, you've arrived at the truth of the matter
English (LSJ)
ιδος, ἡ, name of several rivers, esp. the Tiber, AP9.352 (Leon. Alex.), D.P.352 sq.; cf. Θυβριάς.
Greek (Liddell-Scott)
Θύμβρις: -ιδος, ἡ, ὄνομα ποταμῶν τινων, ἰδίως τοῦ Τιβέρεως, Ἀνθ. Π. 9. 352 κἑξ. (μετὰ διαφ. γραφ. Θύβρις): - Θυμβριὰς ἢ Θυβριάς, άδος, θηλ. ἐπίθ. τοῦ Τιβέρεως, Βεργίλλιος, ὅν ποτε Ρώμης Θυμβριὰς ἄλλον Ὅμηρον ἀνέτρεφε πάτριος ἠχὼ Χριστ. Ἐκφρ. 418, Ἀνθ. Π. παράρτ. 51. 1.
French (Bailly abrégé)
ιδος (ὁ) :
1 le Tibre;
2 Thymbris, fl. ou pê mont. de Sicile.
Greek Monotonic
Θύμβρις: -ιδος, ἡ, ο Τίβερης, σε Ανθ. Π.
Russian (Dvoretsky)
Θύμβρις: ιδος ὁ
1) Тибр (река в Латии) Plut., Anth.;
2) Тимбрид (река в Сицилии) Theocr.