Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
3. păro, ōnis, m., = παρών, a small, light ship, Cic. poët. ap. Isid. Orig. 19, 1, 20 (ed. Orell. IV. 2, p. 572); Gell. 10, 25, 5; cf.: parones navium genus, ad cujus similitudinem myoparo vocatur, Fest. p. 222 Müll.