Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. Marsyas and Marsya, ae, m., = Μαρσύας, a satyr who challenged Apollo to a trial of skill on the flute, and whom the latter vanquished and flayed alive, Liv. 38, 13, 6; Ov. F. 6, 705; id. M. 6, 383; App. Flor. 1, 3, p. 113; Luc. 3, 207; Stat. Th. 4, 186; near his statue in the Roman forum was the place for the transaction of business, Hor. S. 1, 6, 120; Mart. 2, 64, 8; Sen. de Ben. 6, 32, 1; cf. Juv. 9, 2.
2. Marsyas, ae, m., the name of several rivers.