Extended Strong's Hebrew Lexicon (Brown-Driver-Briggs based)
Ephah
Usage: A man of the Midianites living at the time of the Patriarchs, first mentioned at Gen.25.4; son of: Midian (H4080); brother of: Epher (H6081), Hanoch (H2585I), Abida (H0028) and Eldaah (H0420) § Ephah = "gloomy" 1) a son of Midian 2) a Judaite, son of Jahdai 3) a concubine of Caleb in the line of Judah