In Menachos the Gemara relates the Moshe asked Hashem about the meaning of the "crowns" on many Hebrew letters as written in the Torah. Hashem then gives the following response:
אמר לו, אדם אחד יש שעתיד להיות בסוף כמה דורות, ועקיבא בן יוסף שמו, שעתיד לדרוש על כל קוץ וקוץ תילין תילין של הלכות
“There is a certain man who is yet to come, at the end of many generations, his name is Akiva ben Yosef; he will one day seek on each and every tip mounds and mounds of halachot" (http://ancienthebrewpoetry.typepad.com/ancient_hebrew_poetry/2011/09/moshe-and-akiva-in-tb-menachot-29b.html)
Rabbi Akiva will come and darshen each crown. However, I believe Rabbi Akiva never does actually that in the Talmud...
Do we have a tradition of the meanings behind the crowns? (And is it ascribed to Rabbi Akiva?)