无底洞

無底洞
wúdǐdòng
bottomless pit

CEDICT

  1. (literally and figuratively) bottomless pit; abyss; insatiable thing
  2. bottomless pit; abyss; insatiable thing

Wiktionary

比喻人贪婪无度，无法满足。

重編國語辭典

Entry Composition

1 无底 wúdǐ bottomless
2 洞 dòng
  1. cave
  2. hole
  3. zero (unambiguous spoken form when spelling out numbers)

classifier: 個