Meaning

noun the fifth pillar of Islam is a pilgrimage to Mecca during the month of Dhu al-Hijja; at least once in a lifetime a Muslim is expected to make a religious journey to Mecca and the Kaaba

originFrom Arabic حَجّ (ḥajj, “pilgrimage”), from حَجَّ (ḥajja, “to go, to repair”).

Etymology from Wiktionary, CC BY-SA 3.0