Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* amtrŭo, antrŭo, and andrŭo, āre, v. n. [v. andruo], to dance around, in the Salian religious festivals: praesul ut amtruet, inde vulgus redamtruat, Lucil. ap. Fest. p. 270 Müll.