back ‧ ing /ˈbækɪŋ/ BrE AmE noun
1 . [uncountable] support or help, especially with money:
She flew to New York to try to raise some financial backing for the project.
2 . [countable] material that is used to make the back of an object
3 . [countable] the music that is played at the same time as a singer’s voice
—backing adjective :
backing singers