rhomboid major muscle
Anatomical term for the large rhomboid muscle of the upper back.
The rhomboid major muscle pulls the scapula inward.
小菱形筋 is the smaller rhomboid minor muscle, located above the rhomboid major.
Compound of 大 (large), 菱形 (rhombus), and 筋 (muscle), directly describing the muscle's shape and relative size.