ἀδελφόθεος
From LSJ
ἀκίνδυνοι δ' ἀρεταὶ οὔτε παρ' ἀνδράσιν οὔτ' ἐν ναυσὶ κοίλαις τίμιαι → but excellence without danger is honored neither among men nor in hollow ships
brother of Jesus, brother of God, Adelphotheos
Greek (Liddell-Scott)
ἀδελφόθεος: ὁ, οὕτω καλεῖται Ἰάκωβος ὁ ἀπόστολος· ἕτερον δὲ τῶν ἀποστόλων οὐκ εἶδον εἰ μὴ Ἰάκωβον τὸν ἀδελφὸν τοῦ Κυρίου, Παύλ. Ἐπ. π. Γαλ. α΄, 19.