I've looked it up and found out "Tjukurrpa" is an Aboriginal word meaning dream or dreaming. Not quite sure how that applies to this belt. Compared to many of the other belts that these jobs can use (Monk belts, Twilight, Bullwhip, ect.), I wouldn't call this a "dream".
Also, I found how you pronounce this. Jook-oorr-pa. Emphasis is on the first syllable.