مغز گردو

I appreciate your request, but the context provided only shows "thumb|Walnuts" (which appears to be a wiki image caption), without any actual information about what walnuts are or why they matter. I cannot write an accurate overview based solely on this, as I would need to either use external knowledge (which you've asked me not to do) or have substantive context about walnuts provided. Could you share more detailed context about walnuts?

AI-generated from the Wikipedia summary — may contain errors.