tōng-siau洞簫

xiao

xiao (a vertical, notched, end-blown bamboo flute used since ancient times in traditional and classical Chinese music); opium pipe

musical instrumentsfigurative

English Wiktionary, “洞簫” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%B4%9E%E7%B0%AB · confidence: Medium (Wiktionary)