1.
If something that you had forgotten comes back to you, you remember it.
He was also an MP–I’ll think of his name in a moment when it comes back to me...
When I thought about it, it all came back.
PHRASAL VERB : V P to n , V P
2.
When something comes back , it becomes fashionable again.
I’m glad hats are coming back.
PHRASAL VERB : V P
3.
see also comeback