koo-pô-tiǔnn姑婆丈

granduncle

granduncle (husband of paternal grandfather's sister)

English Wiktionary, “姑婆丈” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%A7%91%E5%A9%86%E4%B8%88 · confidence: Medium (Wiktionary, Hokkien)