Meaning of “legalize” - Learner’s Dictionary

legalize

verb [ T ] uk us /ˈliːɡəlaɪz/

to make something legal:

How many Americans want to legalize drugs?
legalization uk us /ˌliːɡəlaɪˈzeɪʃən/ noun [ U ]

the legalization of abortion

(Definition of “legalize” from the Cambridge Learner’s Dictionary © Cambridge University Press)