If FFX is anything to go by, it's something like "Choke-o-bo".
Although that's not how I pronounced it, I said "Chock-a-bo" when I first saw it - I do that a lot with FFs, I read things mentaly and hang on to it even when I learn the "correct" translation, it's a habit I guess but a fun one, and one of the many reasons why in my opinion added voice overs to FF gamse was a terrible mistake.