verb

 

rub skin to rub your skin with your nails, often to stop it itching (= feeling unpleasant)

My skin was so itchy, I was scratching all night.

 

hurt/damage to make a slight cut or long, thin mark with a sharp object

The surface was all scratched.

 

rub surface to rub a hard surface with a sharp object, often making a noise

I could hear the cat scratching at the door.

 

noun

 

hurt/damage a slight cut or a long, thin mark made with a sharp object

I've got all these scratches on my arm from the cat.

 

rub skin when you rub your skin with your nails, often to stop it itching (= feeling unpleasant)

Could you give my back a scratch?