倒灌 [－－]

Jyutping dou3 gun3
Pinyin dào guàn

Definitions (粵典–words.hk)
  1. x

倒灌 [－－]

Jyutping dou2 gun3
Pinyin dào guàn

Definitions (CC-CEDICT)
  1. to flow backwards (of water, because of flood, tide, wind etc)
  2. reverse flow
  3. to back up (sewage)
Definitions (Wiktionary)
  1. verb, of smoke
    to pour in down a chimney
  2. verb, of floodwaters, usually
    to flow from a lower to a higher place