nonnus

Perhaps from children's speech dating back to a late Proto-Indo-European *nana-. See also Ancient Greek νόννος (nónnos, “father”), νέννος (nénnos, “uncle”), νάννας (nánnas, “uncle”), νίννη (nínnē, “aunt”), and Proto-Celtic *nana (“grandmother”).

• (Classical Latin) IPA^(key): /ˈnon.nus/, [ˈnɔnːʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈnon.nus/, [ˈnɔnːus]

nonnus m (genitive nonnī, feminine nonna); second declension (Late Latin)

1. monk
2. tutor
3. old man

Second-declension noun.

• “nonnus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• nonnus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• nonnus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• “nonnus”, in Harry Thurston Peck, editor (1898), Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
• “nonnus”, in William Smith, editor (1848), A Dictionary of Greek and Roman Biography and Mythology, London: John Murray