Lexical Definition

‎ἐθνάρχης‎ ethnárchēs (eth-nar'-khace) governor ^G:N-M
from ‎ἔθνος‎ and ‎ἀρχή‎

ethnarch.

• the governor (not king) of a district

Abbott-Smith

**† ἐθνάρχης, -ου, ὁ (< ἔθνος, ἄρχω), [in LXX: I Mac 14:47 15:1, 2 * ;]
an ethnarch, a provincial governor (cf. I Mac, ll. c.; FlJ, Ant., xiii, 6, 6; Dalman, 332): II Co 11:32.†

Abbott-Smith References

Liddell-Scott-Jones

ἐθνάρχης-άρχης, ου, ὁ,

ruler of a tribe or nation, Ἄσανδρος ἀντὶ ἐθνάρχηςάρχου βασιλεὺς ἀναγορευθεὶς βοσπόρου [Refs 2nd c.AD+]; sheikh, [Refs]; of Abraham, [Refs 1st c.AD+]

__2 title of Jewish official, [LXX+4th c.BC+]
__II adjective, ruling over nations, ἐ. θεοί [Refs 4th c.AD+]

_{LSJ Scripture Refs: 2Cor.11.32}