back scratcher

or back-scratch·er, back·scratch·er


noun

a long-handled device for scratching one's own back.
a person who exchanges favors or services for mutual advantage.

Origin of back scratcher

First recorded in 1785–95

Related forms

back scratching, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019