adavunculus
Could not find adaveo in Logeion dictionaries. Looking for closest alphabetic form.
adavunculus, ī, m., der Sohn des Urgroßoheims, Isid. 9, 6, 28.
ădăvuncŭlus, ī, m. , oncle au quatrième degré : Isid. Orig. 9, 6, 28.