scratcher

nouns

a workman who uses a tool for scratching
is derived from
is a type of (narrower)
an employee who performs manual or industrial labor
a person who scratches to relieve an itch
is derived from
is a type of (narrower)
a human being
"there was too much for one person to do"
a device used for scratching
is derived from
is a type of (narrower)
an instrumentality invented for a particular purpose
"the device is small enough to wear on your wrist"; "a device intended to conserve water"