漏洞

lòudòng
  1. leak
  2. hole
  3. gap
  4. loophole

CEDICT

Entry Composition

1 漏 lòu
  1. to leak
  2. to divulge
  3. to leave out by mistake
  4. waterclock or hourglass (old)
2 洞 dòng
  1. cave
  2. hole
  3. zero (unambiguous spoken form when spelling out numbers)

classifier: 個