bra·chi·al 
(brākē-əl, brăkē-)
(brākē-əl, brăkē-)adj.
Of, relating to, or resembling the arm or a similar or homologous part, such as the foreleg, wing, or other forelimb of a vertebrate: the brachial artery.
[From Latin brācchiālis, from brācchium, arm; see BRACHIUM.]