scratch someone's back

: to scrape or dig with the claws or nails

: to rub and tear or mark the surface of with something sharp or jagged

: to scrape or rub lightly (as to relieve itching)

: a mark or injury produced by scratching

: scrawl, scribble

: the sound made by scratching

: arranged or put together with little selection : haphazard

: made as or used for a tentative effort

: made or done by chance and not as intended

: some person : somebody

: the rear part of the human body especially from the neck to the end of the spine

: the body considered as the wearer of clothes

: capacity for labor, effort, or endurance

: to, toward, or at the rear

: in or into the past : backward in time

: to or at an angle off the vertical

: being at or in the back

: distant from a central or main area

: articulated at or toward the back of the oral passage : formed deep within the mouth

: to support by material or moral assistance

: substantiate

: to assume financial responsibility for