The sources checked record Nenno only as a place name and a surname.
Affection
Cute
Brown, Black, Gold, Cream
Any Size
Unisex
Italian
N
5 Letters
Italian for 'darling' or 'cute'
Italian term of endearment or affectionate name
Recorded as a masculine given name in Spanish
Recorded as a given name in Swedish and Sardinian; no meaning is documented in the sources checked.