ἀρχισυναγωγέω
From LSJ
Οὐ λύσῃς, ὦ ξένε, τόν ἐν τῆ οἰκία φίλον; (Ου λύσης, ω ξένε, τον εν τη οικία φίλον) → Won't you release the friend?
English (LSJ)
be president of the assembly, be archisynagogue; v. ἀρχισυνάγωγος.
Spanish (DGE)
ser presidente de la asamblea religiosa, IG 10(2).288.3, 289.4 (Tesalónica II d.C.).