Meaning ofwildcardin English

Noun

1. a card with variable value; substitutes in games
2. a competitor below standard qualifications
3. a character replacing others in expressions
   The programmer used a wildcard to match any string in the database.
4. an unpredictable or uncontrolled element
   The new employee was a wildcard in the team, bringing unexpected ideas.
5. a character replacing any unknown or unspecified one
   The programmer used a wildcard to represent any missing value in the dataset.