Chocolate bone would be defined as a girl, basically from African American background, who looks sexy as hell. Curves are just right, nice big thighs, and a phat ass. It's like the term "red bone" but this defintion is for basically all the girls out there who ain't light skinned! =]
"Damn, yo look at dat sexy chocolate bone right there! She got a phat ass forreal and she got a mean walk!"