Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* tax, an onomatopee, expressing the sound of blows, Engl. whack: tax tax tergo meo erit: non curo, my back will get whack, whack, Plaut. Pers. 2, 3, 12 (Ritschl reads tuxtax).