noun
rhomboid major muscle
Anatomical term for the large rhomboid muscle of the upper back.
大菱形筋は肩甲骨を内側に引く働きをする。
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.