IdiomBody & SensesEnglish

fine-tooth comb

Meaning: An imaginary device one uses to look for something very carefully.

Example: “The auditors went through the accounts with a fine-tooth comb.”

Equivalents in other languages

Origin: A comb with very closely spaced teeth was used to remove lice and their eggs from hair, which required checking every strand. Going over something "with a fine-tooth comb" meant searching thoroughly from the late 19th century.

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