A mark or token of infamy, disgrace, or reproach: "Party affiliation has never been more casual . . . The stigmata of decay are everywhere\u201d ( Arthur M. Schlesinger, Jr.) See Synonyms at stain. A small mark; a scar or birthmark. Medicine A mark or characteristic indicative of a history of a disease or abnormality. Psychology A mark or spot on the skin that bleeds as a symptom of hysteria. Bodily marks, sores, or sensations of pain corresponding in location to the crucifixion wounds of Jesus, usually occurring during states of religious ecstasy or hysteria. Biology A small mark, spot, or pore, such as the respiratory spiracle of an insect or an eyespot in certain algae. Botany The receptive apex of the pistil of a flower, on which pollen is deposited at pollination. Archaic A mark burned into the skin of a criminal or slave; a brand.