<p><strong>Adjective</strong></p><ul><li>cheerfully optimistic, sometimes to the point of seeming complacent, oblivious, or naive: a sanguine disposition; sanguine expectations.</li><li>reddish; ruddy: a sanguine complexion.</li><li>(in old physiology) having blood as the predominating humor and consequently being ruddy-faced, cheerful, etc.</li><li>bloody; sanguinary.</li><li>blood-red; red.</li><li>Heraldry: a reddish-purple tincture.</li></ul><p><strong>Noun</strong></p><ul><li>a red iron-oxide crayon used in making drawings.</li></ul>