razor UK /ˈɹeɪzə/US /ˈɹeɪzɚ/noun 4verb 1forms 3phrases 2 noun4 •a small device with a very sharp edge, moved over the skin to take hair awayThe box was jam packed full o' gifts for each manjack of us: razors, aftershave, toothbrushes, an' books. — 2013 •A keen-edged knife of peculiar shape, used in shaving the hair from the face or other parts of the body. •A conceptual device that allows one to shave away unlikely explanations for a phenomenon.Occam's razor, Hanlon's razor •The sharp tusk of a wild boar. verb1 •To shave with a razor.He thought likewise, that what with razoring and tanning, and the change of his clothes, he was not likely to be recognised. — 1868 formsrazored · razoring · razors Phrases with razor razor-sharpExtremely sharp. stepping razorA dangerous person, who is not to be messed with.