Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† paeon, ōnis (paean, ānis, Cic. Or. 64, 215 v. h. v.), m., = παιών, a metrical foot of four syllables, three short and one long (and which, acc. to the position of the long syllable, is called primus, secundus, tertius, quartus), Cic. de Or. 3, 47, 183; Quint. 9, 4, 47; 87; 110; Diom. p. 477 P.; Don. p. 1739 ib.; Mar. Vict. p. 1957.
Paeŏnes, um, m., = Παίονες, a people of Macedonia, in that part of it afterwards called Emathia, the Pœonians, Ov. P. 2, 2, 77; id. M. 5, 313.
Sing.: Paeŏn, ŏnis, m., = Παίων, a Pœonian, Liv. 42, 51, 6.
Hence,