debug

Short definition from Wiktionary

Verb

1. 1
   To search for and eliminate malfunctioning elements or errors in something, especially a computer program or machinery.
2. 2
   To remove a hidden electronic surveillance device from (somewhere).
3. 3
   To remove insects from (somewhere), especially lice.

Noun

1. 1
   The action, or a session, of reviewing source code to find and eliminate errors.