zero out

Short definition from Wiktionary

Verb

1. 1
   To reduce to zero.
2. 2
   To cut off funding for (a project).
3. 3
   To fill with zeros, replacing any previous contents.
4. 4
   To press or dial 0 in order to escape a voicemail recording facility and speak to an operator.
5. 5
   To go bankrupt.