supporter

noun

1. a person who supports; advocate; adherent; partisan
2. a thing that supports; esp.,
   1. an elastic, girdlelike device worn to support the back, abdomen, etc.
   2. ☆ jockstrap
      in full athletic supporter
   3. ☆ garter
3. Heraldry either of a pair of figures, as of animals or men, standing one on either side of a shield