TOOTHCOMB
Etymology 1
Noun
toothcomb (plural toothcombs)
(Britain, chiefly, figurative, sometimes, proscribed) A comb with finely spaced teeth, chiefly as a metaphorical means of making a thorough search.
Usage notes
Although regarded by some as erroneous, the word is now said by the Oxford English Dictionary to be “accepted in standard English”.
Verb
toothcomb (third-person singular simple present toothcombs, present participle toothcombing, simple past and past participle toothcombed) (Britain, transitive, sometimes proscribed)
(rare) To use a toothcomb on (something).
(figurative) To search (something) thoroughly.
Etymology 2
Noun
toothcomb (plural toothcombs)
(zoology) A comb-like dental structure found in the lower jaws of certain primates consisting of long, flat front teeth with microscopic grooves, which are used for grooming fur.
Source: Wiktionary