fine-tooth

The compound adjective 'fine-tooth' is a modern English formation that combines two native concepts to create a vivid metaphorical image. The word 'fine' evolved from a Latin term for a boundary or end to signify something delicate or of small detail. 'Tooth', with ancient Germanic origins referring to the structures in the mouth, broadened its meaning to denote any small, projecting point, such as on a saw or comb. When combined, 'fine-tooth' literally describes an object with its projections set very close together, leading to its figurative use in the idiom 'fine-tooth comb', which implies an extremely thorough and detailed examination, mirroring the action of such a comb passing through hair.

Structure: fine (very thin or precise) + tooth (a projecting part) - fine: From Old French 'fin', meaning "delicate, exquisite", from Latin 'finis', meaning "end, limit". In this compound, it functions as an intensifier meaning "very thin, precise, or close-set". - tooth: From Old English 'tōþ', meaning "tooth, projecting point", from Proto-Germanic 'tanþs'. In this compound, it functions as a noun referring to the individual projecting points (e.g., of a comb).