silver dollar

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun US A dollar coin, whether made from silver or not.
• noun US A small pancake.
• noun Several species of tropical freshwater fish of the genus Metynnis, of the family Characidae or Serrasalmidae, of which Metynnis argenteus is one; popular for aquariums; so named from their shape and flashing silver color.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun southeastern European plant cultivated for its fragrant purplish flowers and round flat papery silver-white seedpods that are used for indoor decoration
• noun a dollar made of silver