1.VerbTo remove (something) by combing; to thoroughly comb (something); to thoroughly comb (something) so as to remove something else from it (such as tangles, dirt, or nits).
"I combed out the tangles in my hair. I combed them all out with that fancy comb that Ashley gave me.; You have to comb out the dog's coat regularly. You need to comb all the tangles out of it."
2.VerbTo winnow; for example, to exempt (someone) from a military draft by filtering them out of the list.
"The government combed out some people from the compulsory action.; We've finally combed out this list by removing the newly ineligible people from it."