What does reversal mean on paypal?

I bought a iphone from this person nearly a month ago and paid him through paypal. The item never came so I rung up paypal and they said they would make the seller give me my money back which was £220 but yesterday on paypal it said that i had a reversal from him? But the money isn't back in my bank, what does this mean?

It's just starting the process of getting your money back, it can take up to 5 working business days to get a full refund. Plus they will contact him and see if he has delivery proof(which he won't) and get his side, but ultimately you will get your money back, just takes time.