Wiktionary
granduncles
n. (plural of granduncle English)
Usage examples of "granduncles".
Tough, taciturn old men, most of them honorary granduncles, dying one by one as she grew toward adulthood.
Guys and gals from his high school keep coming round to visit, and Bobby soon learns the trick that his father and his uncles and granduncles all knew, which is that you never talk about the specifics of what happened over there.