(of a comb, brush, etc.) having small teeth placed closely together / (figuratively) (of a search, analysis, etc.) very thorough

plural of fine-tooth comb

A comb with fine, closely spaced teeth, especially one used for removing head lice and their nits (eggs) from the hair; a nit comb. / (figuratively) A means of making a thorough search.

(dated) To comb or go through (hair, an animal's fur, etc.) with a comb having fine, closely spaced teeth. / (figuratively) To search (something or somewhere) meticulously.

Alternative form of fine-tooth comb

simple past tense and past participle of fine-tooth comb

present participle of fine-tooth comb

Misunderstanding of fine-tooth(ed) comb.