Does a crabapple come from the bodark tree?
Yes it does. http://en.wikipedia.org/wiki/Osage-orange
No, it doesnt! below this answer was 2 or 3 sites showing actual small crabapples. those crabapples are small, sour, but edible. they are good for cooking.
the apple from a bois d'arc or bodark, is large, hard, very rough and knotty. and is NOT edible! its not much of an apple at all. just a large , rough, green "ball". The "fruit" of the Osage Orange is sometimes referred to as a "horse apple" This is quite different from a crab apple