piáu-sió-bē表小妹

female cousin

female cousin (mother's sibling's or father's sister's daughter younger than oneself)

English Wiktionary, “表小妹” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E8%A1%A8%E5%B0%8F%E5%A6%B9 · confidence: High (Wiktionary, PH/Quanzhou/Jinjiang)