σύν-τροφος, -ου, ὁ
(< συντρέφομαι, to be brought up together) [in LXX: III Ki 12:24, I Mac 1:6 R, II Mac 9:29 *;]
1. prop., one nourished or brought up with, a foster-brother: Ac 13:1 EV.
2. In Hellenistic usage, as a court term, an intimate friend of a king (v. Deiss., BS, 305, 310 f.): Ac 13:1 (cf. also MM, xxiv).†