Which tissue of they chicken wing is commonly referred to as the meat?

The tissue of the chicken wing commonly referred to as the "meat" is muscle tissue.

Specifically, the pectoralis major muscle, also known as the "breast muscle", is the largest and most prominent muscle in the chicken wing. It's the white meat that you typically find in the wing.

There are also smaller muscles like the pectoralis minor muscle and the teres major muscle, which contribute to the overall meat content of the wing.