Source : Webster's Revised Unabridged Dictionary (1913)

Razor \Ra"zor\, n. [OE. rasour, OF. rasur, LL. rasor: cf. F.
   rasoir, LL. rasorium. See {Raze}, v. t., {Rase}, v. t.]
   1. A keen-edged knife of peculiar shape, used in shaving the
      hair from the face or the head. ``Take thee a barber's
      rasor.''

Source : WordNet®

razor
     n : edge tool used in shaving

razor
     v : shave with a razor