tuā-kǔ大舅

elder maternal uncle

elder maternal uncle (mother's elder brother); brother-in-law (wife's elder brother)

English Wiktionary, “大舅” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%A4%A7%E8%88%85 · confidence: Medium (Wiktionary, Hokkien)