Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* af-frĭo (better adf-), āre, v. a., to rub or crumble to pieces, or to crumble over: alius aliud adfriat aut adspergit, ut Chalcidicam aut Caricam cretam, Varr. R. R. 1, 57.