Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Ŏvīnĭus, ii, m. [ovis], a Roman surname: nomina multa habemus ab utroque pecore, a minore Porcius, Ovinius, Caprilius, Varr. R. R. 2, 1, 10.