Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pĕr-ĭnungo, ĕre, v. a., to anoint all over (ante-class.): tonsas recentes eodem die perinungunt vino et oleo (al. perungunt), Varr. R. R. 2, 11, 7.