Definition of toothcomb in English:

toothcomb

noun

British
  • Used with reference to a very thorough search or analysis of something.

    ‘Cropper will have been through the manuscript with a toothcomb’
    ‘the boys have been over the area with a fine toothcomb’
    • ‘The Guardian's Book Review has a review of his new biography of the grumpiest man in popular music, which advises you to snap it up quick before Van's solicitors run their toothcombs over it.’
    • ‘And even those who have gone through the figures with a fine fiscal toothcomb are still unsure that they can work out how it will all work.’

Usage

The forms toothcomb and fine toothcomb arose from a misreading of the compound noun fine-tooth comb, a comb with closely spaced teeth. However, in modern use all the forms are accepted in standard English

Pronunciation:

toothcomb

/ˈtuːθkəʊm/