thoracoacromial artery

noun

tho·​ra·​co·​acro·​mi·​al artery ˌthō-rə-ˌkō-ə-ˈkrō-mē-əl- 

: a short branch of the axillary artery that divides into four branches supplying the region of the pectoralis muscles, deltoid, subclavius, and sternoclavicular joint