Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† māzŏnŏmus, i, m. (acc. to others, māzŏnŏmon, i, n.; the m. form corresponds with the Greek word μαζονομος, sc. κύκλος), a dish, charger, Varr. R. R. 3, 4, 3: deinde secuti Mazonomo pueri magno discerpta ferentes Membra gruis, etc., Hor. S. 2, 8, 86 (cf. Schol. Aug. ad loc.); Nemes. de Aucup. 16.