seatback
/ˈsiːtˌbæk/
noun
- The upright part of a chair or seat that supports a person's back.
- The airline passenger put a pillow behind the seatback for extra support.
- She adjusted the seatback to a more comfortable angle before the movie started.
- He leaned the seatback all the way down to take a nap during the long drive.
Synonyms