1. makes something legal or lawful; gives legal status to something previously illegal
Usage: British spelling; third person singular present tense

Examples

• The new government legalises same-sex marriage.
• This bill legalises the use of medical cannabis.
• The reform legalises street vendors in the city center.
• Parliament legalises online gambling with strict regulations.
• The law legalises home schooling for the first time.
• The amendment legalises dual citizenship for immigrants.