haj rare noun 1. the fifth pillar of Islam is a pilgrimage to Mecca during the month of Dhu al-Qadah; at least once in a lifetime a Muslim is expected to make a religious journey to Mecca and the Kaaba “for a Muslim the hajj is the ultimate act of worship” Synonymshajjhadj Related words Broader terms pillar of Islampilgrimage WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
