The Collaborative International Dictionary of English v.0.48:

Coronary \Cor"o*na*ry\, n.
   1. A small bone in the foot of a horse.
      [Webster 1913 Suppl.]

   2. Informal shortening of coronary thrombosis, also used
      informally to mean heart attack.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Coronary \Cor"o*na*ry\ (k?r"?-n?-r?), a. [L. coronarius: cf. F.
   coronaire.]
   1. Of or pertaining to a crown; forming, or adapted to form,
      a crown or garland. "Coronary thorns." --Bp. Pearson.
      [1913 Webster]

            The catalogue of coronary plants is not large in
            Theophrastus.                         --Sir T.
                                                  Browne.
      [1913 Webster]

   2. (Anat.) Resembling, or situated like, a crown or circlet;
      as, the coronary arteries and veins of the heart.
      [1913 Webster]

WordNet (r) 3.0 (2006):

coronary
    adj 1: surrounding like a crown (especially of the blood vessels
           surrounding the heart); "coronary arteries"
    n 1: obstruction of blood flow in a coronary artery by a blood
         clot (thrombus) [syn: coronary thrombosis, coronary]

Moby Thesaurus II by Grady Ward, 1.0:

103 Moby Thesaurus words for "coronary":
   abdominal, anal, angina, angina pectoris, annular, annulate,
   annulose, aortic insufficiency, aortic stenosis, apoplectic stroke,
   apoplexy, appendical, arrhythmia, arteriosclerosis,
   atherosclerosis, atrial fibrillation, auricular fibrillation,
   beriberi heart, cardiac, cardiac arrest, cardiac insufficiency,
   cardiac shock, cardiac stenosis, cardiac thrombosis, carditis,
   cecal, circinate, circular, colic, colonic,
   congenital heart disease, cor biloculare, cor juvenum,
   cor triatriatum, coronary insufficiency, coronary thrombosis,
   crownlike, cyclic, cycloid, diastolic hypertension, discoid,
   disklike, duodenal, encased heart, endocarditis, enteric,
   extrasystole, fatty heart, fibroid heart, flask-shaped heart,
   frosted heart, gastric, hairy heart, heart attack, heart block,
   heart condition, heart disease, heart failure, high blood pressure,
   hypertension, hypertensive heart disease, ileac, intestinal,
   ischemic heart disease, jejunal, mesogastric, mitral insufficiency,
   mitral stenosis, myocardial infarction, myocardial insufficiency,
   myocarditis, myovascular insufficiency, ox heart, palpitation,
   paralytic stroke, paroxysmal tachycardia, pericarditis, pile,
   premature beat, pseudoaortic insufficiency,
   pulmonary insufficiency, pulmonary stenosis, pyloric, rectal,
   rheumatic heart disease, ring-shaped, ringlike, round, round heart,
   rounded, sclerosis, splanchnic, stony heart, stroke, tachycardia,
   thrombosis, tricuspid insufficiency, tricuspid stenosis,
   turtle heart, varicose veins, varix, ventricular fibrillation,
   visceral