overgrind

over- +‎ grind

overgrind (third-person singular simple present overgrinds, present participle overgrinding, simple past and past participle overground)

1. (transitive) To grind excessively.
   • 2016, Holly Bellebuono, The Healing Kitchen, page 17:

     Using a coffee grinder or mortar and pestle, pulse or grind to the desired consistency, being careful not to overgrind the mixture into a paste or seed butter.