From 'adar; amplitude, i.e. (concrete) a mantle; also (figuratively) splendor -- goodly, robe.
see HEBREW 'adar
H145. eder
אֶ֫דֶר noun [masculine]
1 glory, magnificence (Assyrian aduru, adiru) ironical of price of shepherd (symbolic) Zechariah 11:13.
2 mangle, cloak (as wide) Micah 2:8 ("" שַׂלְמָה), but read אדרת (ת lost before following ת), so WRSProph 427.