Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† naupēgus, i, m., = ναυπηγός, a shipbuilder, shipwright, ship-carpenter: naupego in navi maritimā diurni X sexaginta, Edict. Diocl. p. 19; Dig. 50, 6, 6; Firm. Math. 4, 7 med.