v.1. To become free of liquid or moisture: If you sit in the sun, your wet hair will dry out.
2. To remove the moisture from something: Dry out your clothes on the line. We'll dry the rags out on the lawn.
3. Slang To become sober: I need a few hours to dry out before I go out again.
4. Slang To make someone become sober: The crisp morning air has dried me out a bit.
5. Slang To undergo a cure for alcoholism: My uncle went to a clinic to dry out.