Tubero
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
Latin > English (Lewis & Short)
Tūbĕro: ōnis, m.,
I a surname in the gens Aelia; e. g.
I Q. Aelius Tubero, a Stoic, an opponent of Tiberius Gracchus, Cic. brut. 31, 117; id. Lael. 11, 37; 27, 101; id. de Or. 3, 23, 87.—
II L. Tubero, lieutenant of Q. Cicern in Asia, an historian, Caes. B. C. 1, 31; Cic. Q. Fr. 1, 1, 3, § 10; Gell. 6, 3, 4.—
III Q. Aelius Tubero, son of the preceding, a relative (according to some, the brother-in-law) of Cicero, and the accuser of Ligarius, Cic. Lig. 1, 1; 3, 9 al.; Quint. 11, 1, 80; Suet. Caes. 83.