Yes, bony is a Scrabble word!
...and is worth 9 points in Scrabble, and 10 points in Words with Friends
bony
Adjective
1. Very thin especially from disease or hunger or cold
2. Composed of or containing bone
3. Having bones especially many or prominent bones
What Scrabble words can I make with the letters in bony?
3 Letter Words
2 Letter Words