[sub.cla.vi.an] adj [NL subclavius, fr. sub- + clavicula clavicle] (1646): of, relating to, being, or performed on a part (as an artery, vein, or nerve) located under the clavicle "~ angioplasty"
[2]subclavian n (1719): a subclavian part (as an artery, vein, or nerve)