Stigma (noun)

1. A mark of disgrace or infamy; a stain or reproach, typically a symbol of a particular vice or failing.
2. A small mark, spot, or discoloration on the skin or on a plant.

Origin:

Late latin, from greek stigma "mark, puncture", from stizein "to tattoo".

Examples:

1. The stigma of mental illness is slowly being lifted.
2. The stigma of being a convicted criminal is hard to overcome.
3. The plant's stigma is a small, sticky, receptive part that receives the pollen.
4. The social stigma of being poor is hard to deal with.
5. He felt the stigma of being different.