fine-toothed comb is a noun meaning "a comb with teeth set close together". It carries 2 recorded senses.
a comb with teeth set close together
a method of examining in minute detail
“he went over the contract with a fine-tooth comb looking for loopholes”
Definitions, synonyms and semantic relations for fine-toothed comb come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.