One venerated for experience, judgment, and wisdom. Having or exhibiting wisdom and calm judgment. Proceeding from or marked by wisdom and calm judgment: sage advice. Archaic Serious; solemn. Any of various plants of the genus Salvia, especially S. officinalis, having aromatic grayish-green, opposite leaves. Also called ramona. The leaves of this plant used as a seasoning. Any of various similar or related plants in the mint family. Sagebrush.