ETYM Latin, a mark, a brand, from Greek stigma the prick or mark of a pointed instrument, a spot, mark. Related to Stick.
1. A skin lesion that is a diagnostic sign of some disease.
2. An external tracheal aperture in a terrestrial arthropod.
3. Mark; spot; stain; disgrace; mark representing wound of Christ; Botany, part of pistil, especially end of style, on which pollen germinates.