turn (somebody/something) into something phrasal verb ( see also ↑ turn )
1 . to become something different, or to make someone or something do this:
The sofa turns into a bed.
A few weeks later, winter had turned into spring.
Hollywood discovered her and turned her into a star.
2 . to change by magic from one thing into another, or to make something do this:
In a flash, the prince turned into a frog.
The witch had turned them all into stone.
3 . days turned into weeks/months turned into years etc used to say that time passed slowly while you waited for something to happen:
Weeks turned into months, and still there was no letter.