Yes, hadj is a Scrabble word!
...and is worth 15 points in Scrabble, and 16 points in Words with Friends
hadj
Noun
1. 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
What Scrabble words can I make with the letters in hadj?
3 Letter Words
2 Letter Words