Read Edit View history 无底洞 wúdǐdòng bottomless pit Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 无底洞/無底洞 · wúdǐdòng · bottomless pit 2026/03/04 无底洞 / 無底洞 wúdǐdòng bottomless pit a bottomless pit; (figuratively) an insatiable drain on resources 这个旧房子的维修费用简直是个无底洞。 noun created sense Mar 4, 2026, 02:25 AM