Definition of "munge"

munge

/mʌnd͡ʒ/

verb
third-person singular simple present munges, present participle munging, simple past and past participle munged
1. (transitive, computing, informal) To transform data in an undefined or unexplained manner, as for example when data wrangling requires nonsystemic or nonsystematic edits.
  Quotations
  As a part of the code review with the development team, notify them that you want to have these options as a part of the installation script, rather than you munging the installation scripts during deployment.
  2011, Brian Knight, Ketan Patel, Wayne Snyder, Professional Microsoft SQL Server 2008 Administration
2. (transitive, computing, informal) To add a spamblock to (an email address).
  Quotations
  Munging is effective — it prevents unwanted email from reaching you by keeping your real email address out of the clutches of the address-harvesting programs.
  1998, Alan Schwartz, Simson Garfinkel, Stopping spam
3. (transitive, genealogy, informal) To corrupt a record about a person by erroneously merging in information about another person.