Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
af-frĭco (better adf-), āre, ui, ātum, v. a., to rub on or against a thing: alicui (only in post-Aug. prose).
* affrictus (adf-), ūs, m. [affrico], a rubbing on or against: Spuma aquae adfrictu verrucas tollit, Plin. 31, 6, 38, § 72.