stigma (
http://definr.com/stigma)
n 1: the apical end of the style where pollen is deposited
2: a symbol of disgrace or infamy; "And the Lord set a mark
upon Cain"--Genesis [syn:
mark,
brand,
stain]
3: an external tracheal aperture in a terrestrial arthropod
4: a skin lesion that is a diagnostic sign of some disease