grandnephew

English

grandnephew (plural grandnephews)

A grandson of one's sibling; a son of one's nephew or niece. (Brother's grandson: fraternal grandnephew. Sister's grandson: sororal grandnephew.)

grandson of a sibling

Catalan: besnebot (ca) m, renebot (ca) m, neboder (ca) m
Chinese:
Mandarin: 侄孫／侄孙 (zh) (zhísūn)
Czech: prasynovec m
Dutch: achterneef (nl) m, oudoomzegger
Esperanto: pranevo
French: petit-neveu (fr), (fraternal) petit-neveu fraternel, (sororal) petit-neveu sororel
Galician: sobriño neto m
Georgian: დისწულის ვაჟი (disc̣ulis važi), ძმისწულის ვაჟი (ʒmisc̣ulis važi), დის შვილიშვილი (dis švilišvili) (doesn't indicate grandchild's gender), ძმის შვილიშვილი (ʒmis švilišvili) (doesn't indicate grandchild's gender)
German: Großneffe (de) m
Hebrew: נכדן (he) m (nekhdan)
Ido: posnevulo (io)
Irish: garnia
Italian: pronipote (it) m
Japanese: 又甥 (またおい, mataoi), 大甥 (ja) (おおおい, ōoi)
Latin: (fraternal) nepos fratris m, (sororal) nepos sororis m
Malay: cucu saudara m
Portuguese: sobrinho-neto (pt) m
Russian: внуча́тый племя́нник (ru) m (vnučátyj plemjánnik)
Slovak: prasynovec m
Spanish: resobrino (es) m, sobrino nieto m
Welsh: gornai m