1) Acrobatic feat 2) Acrobatic stunt 
A backbend is a gymnastics, contortion, or dance move, where the spine is bent backwards, and catching oneself with the hands. Throughout the move, the abdominal muscles, obliques, and legs are used to steady the performer while curving backwards. Backbending can be acquired from intense training or genetics. == Overview == The spine consists of 2...
[n] - an acrobatic feat in which the trunk is bent backward from a standing position until the hands touch the floor
Backbend refers to leaning backwards with the upper body.
noun an acrobatic feat in which the trunk is bent backward from a standing position until the hands touch the floor