1. 1  a suffix, equivalent in meaning to -ic, occurring in adjectives of Greek origin (analytic), used especially in the formation of adjectives from nouns with stems in -sis: hematotic; neurotic. Origin of -tic. Greek.
The supraspinatus (plural supraspinati, from Latin supraspinatus) is a relatively small muscle of the upper back that runs from the supraspinatous fossa superior of the scapula (shoulder blade) to the greater tubercle of the humerus. It is one of the four rotator cuff muscles and also abducts the arm at the shoulder.
I believe that the point of the brisket is the supraspinatus muscle. It is a rotator cuff muscle which should be most similar to other rotator cuff muscles. I am no expert in beef anatomy, but it should be similar to human anatomy. So the other rotator cuff muscles are included in the chuck.