FROM STRONG’S HEBREW DICTIONARY (1890)

Strong’s Hebrew Dictionary (1890) — public domain, printed whole.

'Edom ed-ome' — or (fully) oEdowm {ed-ome'}; from 122; red (see Gen. 25:25); Edom, the elder twin-brother of Jacob; hence the region (Idumaea) occupied by him:--Edom, Edomites, Idumea.

see HEBREW for 0122