Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† ăcīnăcēs, is, m., = ἀκινάκης, the short sabre of the Persians, Medes, and Scythians, a scimitar, Hor. C. 1, 27, 5; Curt. 3, 3, 4; 4, 15, 17 al.