"An Agent or Cause makes a Patient sharper or duller. An Instrument or Means may be mentioned. John is in the basement sharpening his axe."@en . . . "Cause_to_be_sharp" . . . . "1291"^^ . "2004-11-30T13:18:19+01:00"^^ . . . . . . . . . . . . . . . . . . . .