Boyd’s Bible Dictionary:
(hairy). (1) A Horite chief (Gen. 36:21; Deut. 2:12). (2) Land or country corresponding with valley and mountains of Arabah, stretching from the Dead Sea to the Gulf of Akaba (Gen. 14:6; 32:3; 33:14-16). The region was first occupied by the Horites, and fell into possession of Esau and his posterity (Gen. 36:8-9). Hence Seir and Edom are sometimes spoken of as identical. The Israelites, when refused permission to march through Edom to Moab, marched round the granite ranges of Seir and entered Moab by the east and north. (3) A boundary mark of Judah (Josh. 15:10).
Concise Bible Dictionary:
Ancestor of the Horites who dwelt in Mount Seir and “the land of Seir” (Gen. 36:20-21; 1 Chron. 1:38).
Strong’s Dictionary of Hebrew Words:
Meaning:
formed like 8163; rough; Seir, a mountain of Idumaea and its aboriginal occupants, also one in Palestine
Jackson’s Dictionary of Scripture Proper Names:
shaggy hairy: goat-like
Potts’ Bible Proper Names:
Rough; hairy; shaggy:―name of two mountains, also a Horite chief, Gen. 36:20. {Hirsutus}