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Longman Dictionary of Contemporary English
silver dollar
noun
EXAMPLES FROM CORPUS
▪ The entire device is held together by a metal frame roughly the size of a silver dollar.
▪ Three new coins have been minted, gold five dollar, silver dollar and clad half dollar.
▪ Virgil Glover himself seeing Tom Glover doing rather badly, shining like a brass tack next to a silver dollar.
Wiktionary
silver dollar

n. 1 (context US English) A dollar coin, whether made from silver or not. 2 (context US English) A small pancake. 3 Several species of tropical freshwater fish of the genus (taxlink Metynnis genus noshow=1), of the family Characidae or ''(taxlink Serrasalmidae family noshow=1)'', of which (taxlink Metynnis argenteus species noshow=1) is one; popular for aquariums; so named from their shape and flashing silver color.

WordNet
silver dollar
  1. n. a dollar made of silver [syn: cartwheel]

  2. southeastern European plant cultivated for its fragrant purplish flowers and round flat papery silver-white seedpods that are used for indoor decoration [syn: honesty, money plant, satin flower, satinpod, Lunaria annua]

Wikipedia
Silver dollar

Silver dollar may refer to:

  • A dollar coin made of silver or any white metal.
  • Silver dollar (fish), a name given to various fish species.
  • A North American-style pancake.
  • Silver Dollar (film), a 1932 film starring Edward G. Robinson.
  • Silver Dollar, Ontario, a community in Ontario, Canada.
Silver dollar (fish)

Silver dollar is a common name given to a number of species of fishes, mostly in the genus Metynnis, tropical fish belonging to the Characidae family which are closely related to piranha and pacu. Native to South America, these somewhat round-shaped silver fish are popular with fish-keeping hobbyists.

The silver dollar is a peaceful schooling species that spends most of its time in the mid- to upper-level of the water. Its maximum lifespan is more than ten years. A chin-layer, the adult fish will spawn around 2,000 eggs. This breeding occurs in soft, warm water in low light.

Silver dollars natively live in a tropical climate in the sides of weedy rivers. They prefer water with a pH of 5–7, a water hardness of up to 15 dGH, and an ideal temperature range of 24–28 °C (75–82 °F). Their diet is almost exclusively vegetarian and in captivity they will often eat all the plants in a tank. They will also eat worms and small insects.

Silver Dollar (film)

Silver Dollar is a 1932 American Pre-Code biographical film starring Edward G. Robinson, Bebe Daniels and Aline MacMahon. Based on David Karsner's biography of the same name, it tells the story of the rise and fall of Horace Tabor (renamed Yates Martin), a silver tycoon in 19th century Colorado.

A copy is preserved in the Library of Congress.