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 muscle is one of the musculotendinous support structures called the rotator cuff that surround and enclose the shoulder. It helps to resist the inferior gravitational forces placed across the shoulder joint due to the downward pull from the weight of the upper limb.
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.