unuče

1. grandchild
   Baka čuva unuče dok su roditelji na poslu. — Grandma looks after the grandchild while the parents are at work.
   Moji roditelji jedva čekaju prvo unuče. — My parents can't wait for their first grandchild.

The word is gender-neutral; unuk is a grandson, unuka a granddaughter, and the collective plural is unučad.