Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* rĕ-pūmĭcātĭo, ōnis, f [pumico], a making smooth again; a smoothing, polishing: repumicatio et quaedam politura gemmarum, i. e. a trimming off of the buds, Plin. 17, 26, 39, § 246.