1help or support:the foreign secretary won the backing of opposition parties
a layer of material that forms, protects, or strengthens the back of something:the flooring has a cork base with jute backing [count noun]:the fabric has a special backing for durability
(especially in popular music) the musical or vocal accompaniment to the main singer or soloist:the trio provided backing [as modifier]:a backing group
2 Phonetics the movement of the place of formation of a sound towards the back of the mouth.