To go through something with a fine tooth comb means examining it very carefully and looking for small details or mistakes.
The phrase comes from grooming combs with very narrow teeth. These combs are used to remove tiny things like dirt or lice from hair. This suggests a slow and thorough search.
The phrase comes from grooming combs with very narrow teeth. These combs are used to remove tiny things like dirt or lice from hair. This suggests a slow and thorough search.
The editor went through the report with a fine tooth comb before it was published.