| razor | (noun) edge tool used in shaving | - |
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| (verb) shave with a razor | - |
| razorback | (adjective) having a sharp narrow back | Synonyms: razor-backed |
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| (noun) a mongrel hog with a thin body and long legs and a ridged back; a wild or semi-wild descendant of improved breeds; found chiefly in the southeastern United States | Synonyms: razorback hog, razorbacked hog |
| (noun) any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin | Synonyms: rorqual |
| razorbill | (noun) black-and-white northern Atlantic auk having a compressed sharp-edged bill | Synonyms: Alca torda, razor-billed auk |
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| razorblade | (noun) a blade that has very sharp edge | - |
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