Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
plānĭpes, pĕdis, m. [planus-pes, flatfoot, barefoot], a kind of pantomime or ballet-dancer, who performed without the comic soccus or the tragic cothurnus: exsultat planipes, Atta ap. Diom. p. 487 P.: planipedes audit Fabios, Juv. 8, 191: planipes saltans, Gell. 1, 11, 12.