bred in the bone meaning

• [American slang]
  adj. phr. Belonging to your nature or character, especially from early teaching or long habit; natural from belief or habit; believing deeply. The Willett children's cleanness is bred in the none. Often used, with hyphens before the noun. Joe is a bred-in-the-bone horseman; he has been riding since he was six.
  Antonym: SKIN-DEEP.
  

• bred:    v.past and past pa ...
• born and bred:    adj.born and broug ...
• city-bred:    Adjective: city-br ...

Examples

1. what is bred in the bone will come out in the flesh.
2. what is bred in the bone will not go out of the flesh
3. what's bred in the bone will come out in the flesh
4. what is bred in the bone will never crane out of the flesh
5. what is bred in the bone will not ( or : never ) out of the flesh