also hadj, "the pilgrimage to Mecca," which every free Muslim is bound to make, as a religious duty, from Arabic hajj "pilgrimage," from hajja "he went on a pilgrimage." [..]

A Muslim who has performed a Hajj. The term is used as a pejorative by some U.S. troops in Iraq.

Pilgrimage to Makkah combined with other holy places. Hajj, the fifth pillar of Islam, is a duty on every Muslim who is financially and physically able to carry it out, at least once in his/her lifetime.

(n) 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

Pronounced “hahj.” In Islam, a pilgrimage to Mecca in Saudi Arabia, the birthplace of the Prophet Muhammad. It is the fifth of the Five Pillars of Islam. Every Muslim who is physically capable and fin [..]

is the Islamic pilgrimage

The Pilgrimage to Mecca. It can also be used as a title for someone who has gone on pilgrimage. In the latter context, Hajj refers to a man and Hajjah is used for women.  

  The Arabic term for the pilgrimage to Mecca and the Kacba required of all Muslims.