v.1. To separate some class, kind, or size from others: I sorted out the blue socks and washed them separately. We sorted the rotten fruit out from the rest and threw it away.
2. To arrange some collection according to class, kind, or size: I sorted out the pile of photos and put them in the appropriate albums. The jeweler sorted the diamonds out by weight and clarity.
3. To resolve some confusion or conflict: It took me an hour to sort out the problem with my reservation. The couple almost broke up, but they managed to sort things out.
4. Slang To punish someone or correct someone's behavior: If they keep messing around, I'll have to go sort them out.