1. In the Star Wars galaxy, it is a Huttese term meaning "fodder." It is often paired with the word "Bantha," which is a type of large animal in the Star Wars galaxy, to describe someone who is unworthy or lowly in the eyes of the speaker.
2. It can also be used as an exclamation for when something goes wrong, akin to the word dammit. This is one reason why it is often confused for the word shit.