Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
aenĕātor, ōris, m. [aes], one who blows a horn in war, a trumpeter: Aeneatores cornicines dicuntur, id est cornu canentes, Paul. ex Fest. p. 20 Müll.; Suet. Caes. 32.