Can you spell bite bight?

Yes, bight is a word. It doesn't mean bite, though, it refers to a large bay of water, such as the Bight of Biafra. Occasionally it can be used to mean a bend in any geographical feature.

Yes, but it has a different meaning. Bite as a verb is to mark or tear with teeth, like an animal bite. Bight is a curved section of rope in a knot, or a curved section of land.