Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Euhēmĕrus, i, m., = Εὐήμερος, a Greek poet and philosopher, Cic. N. D. 1, 41, 119; Varr. R. R. 1, 48, 2; Lact. 1, 11, 33 al.