floodgate

Short definition from Wiktionary

Noun

1. 1
   An adjustable gate or valve used to control the flow of water through a sluice.
2. 2
   Anything that controls or limits an outpouring of people, emotion, etc.
3. 3
   A stream that passes through a floodgate; a torrent.

Proper noun

1. 1
   A series of allegations of corruption, mismanagement, and irregularities in flood control projects in the Philippines during and before the administration of President Bongbong Marcos.