Definition of "scratcher"

Someone who scratches.  examples

A piece of equipment used to scratch part of the body to relieve an itch.  examples

An item made of shreddable material (carpet, corrugated cardboard, etc.) designed to be scratched, usually by pet cats  examples

(gambling) A scratch card.  examples

(slang) A bed.

(zoology) Any rasorial bird.

(slang) A counterfeiter.

(slang, derogatory) An unlicensed tattoo artist.

A device for cleaning mud etc. from a wellbore.  examples