doubloon

English Wikipedia has an article on:

doubloon

Wikipedia

• (misspelling) dubloon

From French doublon, from Spanish doblón, augmentative of doble (“double”), because it was worth twice a pistole.

• (Received Pronunciation) IPA^(key): /dʌˈbluːn/

• Audio (Southern England):

  (file)

• Rhymes: -uːn

doubloon (plural doubloons)

1. (historical, numismatics) A former Spanish gold coin, also used in its American colonies. [from early 17th c.]
   • 1883, Robert Louis Stevenson, Treasure Island:

     English, French, Spanish, Portuguese, Georges, and Louises, doubloons and double guineas and moidores and sequins, the pictures of all the kings of Europe for the last hundred years, strange Oriental pieces stamped with what looked like wisps of string or bits of spider's web, round pieces and square pieces, and pieces bored through the middle, as if to ware them round your neck – nearly every variety of money in the world must, I think, have found a place in that collection...

2. (Canada, slang, numismatics) Clipping of doubloonie.
3. Alternative form of dabloon (“fictional currency”)

• doubloonie
• Brasher doubloon