fine-tooth comb
noun /ˌfaɪn tuːθ ˈkəʊm/
/ˌfaɪn tuːθ ˈkəʊm/
(also fine-toothed comb)
Idioms - a comb in which the pointed parts are thin and very close together
Idioms
go over/through something with a fine-tooth/fine-toothed comb
- to examine or search something very carefully
- The police have gone over the house with a fine-tooth comb.