1. occurring or existing between different leagues, especially in sports
Usage: commonly used in sports contexts

1. third-person singular present tense of 'interleague'; to engage in competition or interaction between leagues
Usage: rare; primarily used in sports reporting

Examples

• The interleagues games between the American and National Leagues draw large crowds.
• Baseball fans enjoy watching interleagues matchups during the regular season.
• The team interleagues with rivals from other conferences throughout the year.
• Interleagues play allows teams to compete against opponents they don't normally face.
• Several interleagues contests are scheduled for next month.