Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
The word corrugari could not be parsed. Trying a normal dictionary lookup:
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cor-rūgis (conr-), e, adj. [ruga], having wrinkles or folds, corrugate: sinus (chlamydis), Nemes. Cyn. 92.
cor-rūgo (conr-), no perf., ātum, 1, v. a., to make full of wrinkles, to wrinkle, corrugate (very rare): olivam, Col. 12, 50, 19; cf. acina, id. 12, 39, 3.
Poet.: ne sordida mappa Corruget nares, i. e. produce loathing, cause disgust, Hor. Ep. 1, 5, 23 (cf. Quint. 11, 3, 80).
* corrūgus (conr-), i, m. [of the same stem with arrugia]; in the lang. of mining, a canal, water-conduit, Plin. 33, 4, 21, § 74.