Reference: Horites
Easton
cave-men, a race of Troglodytes who dwelt in the limestone caves which abounded in Edom. Their ancestor was "Seir," who probably gave his name to the district where he lived. They were a branch of the Hivites (Ge 14:6; 36:20-30; 1Ch 1:38-39). They were dispossessed by the descendants of Esau, and as a people gradually became extinct (De 2:12-22).
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Hastings
The pre-Edomitic inhabitants of Seir or Edom according to Ge 14:6 (a late passage) and De 2:12,22 (Deuteronomist 2). Apparently they commingled with the Edomite invaders, for Ge 36:20-21,29 (Priestly Narrative 3) counts them among the descendants of Esau. The name is usually taken to mean 'cave-dwellers,' and this is probably correct. There are many tombs in the rocks at Petra (cf. Robinson, RP Biblical Researches in Palestine ii. 129, 134), and some of these, like some at Beit Jibrin and some recently discovered at Gezer (cf. Quarterly Statement of the same, 1902, pp. 345 ff., and 1903, pp. 9