brush out

verb3

1. •
   To brush (someone's hair or an animal's fur) to remove tangles and give the hair a satisfactory texture.

   • The first step in brushing out a dog’s coat is…
2. •
   To remove brush (wild vegetation, generally larger than grass but smaller than trees) from a trail, campsite, etc.

   • It’s important to brush out the north trails before the spring.
3. •
   (no longer used) To clean a form using lye or turpentine.