to sharpen; to grind; to whet; to hone; to make keen
to sharpen; to hone; to wash (rice); to scour; to polish
polish; grinding; sharpening
sharpener (of swords) and polisher (of mirrors)
claw sharpening; scratching post (for cats); claw sharpener
knife sharpener; whetstone
tool sharpener (esp. knives)
sharpener (of swords) and polisher (of mirrors)
sharpening with a rough grindstone; rough sharpening