Hejaz

al-Hejaz (also Hijaz, Hedjaz; al-Ḥiǧāz, literally "the barrier) is a region in the west of present-day Saudi Arabia. Defined mostly by the Red Sea, it extends from Haql on the Gulf of Aqaba to Jizan. Its main city is Jeddah, but it is probably better-known for the Islamic holy cities of Mecca and Medina. As a region, The Hijaz, as it is often referred to, because of being the site of Islam's holy places, has significance in the Arab and Islamic historical and political landscape. In Arabic, Hejaz means literally "the barrier" as it separates the land of Najd in the east from the land of Tihamah in the west.
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Noun
1. a coastal region of the western Arabian Peninsula bordering on the Red Sea; includes both Mecca and Medina; formerly an independent kingdom until it united with Nejd to form the Kingdom of Saudi Arabia
(synonym) Hedjaz, Hijaz
(hypernym) geographical area, geographic area, geographical region, geographic region
(part-holonym) Saudi Arabia, Kingdom of Saudi Arabia
(part-meronym) Mecca

The mountainous region of the Arabian Pennisula that is located along the north-east coast of the Red Sea. It is here that both Mecca and Medina are located. At the time of Mohammed's birth, it was populated by numerous, rival Arab tribes.