“Peor” means cleft

Peor: a mountain peak in Moab belonging to the Abarim range, and near Pisgah, to which, after having ascended Pisgah, the prophet Balaam was conducted by Balak that he might look upon the whole host of Israel and curse them. (Numbers 23:14,28) In four passages -- (Numbers 25:18) twice; Numb 31:16; Josh 22:17 --Peor occurs as a contraction for Baal-peor. [BAAL.)