|fine-tooth comb or fine-toothed comb|
|1.||a comb with fine teeth set closely together|
|2.||go over with a fine-tooth comb, go over with a fine-toothed comb, go through with a fine-tooth comb, go through with a fine-toothed comb to examine very thoroughly|
|fine-toothed comb or fine-toothed comb|
A method of searching or investigating in minute detail, as in He examined the figures with a fine-tooth comb but found no errors. The practice of using a comb with close-set teeth to comb out head lice was transferred to various kinds of investigation in the late 1800s.