paar noun1 •A hypothesized shifting of four geologic blocks: northeast Africa west of Red Sea and north of the Ethiopian valley, the Arabian Peninsula, the Sinai Peninsula, and the Horn of Africa east of the rift valleys, which is used to explain the structural features of the area.By the end of early Eocene time a paar developed between Africa and Arabia which caused tensional forces in the southern Red Sea area (Swartz and Arden, 1960). — 1976 formspaars