1. A Spanish and S. American gold coin, of about the value of a guinea, so called as originally double of a pistole.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• doublin,
• dubloons,
• soubloon,
• xoubloon,
• coubloon,
• foubloon,
• roubloon,
• eoubloon,
• diubloon,
• douboloon,
• doublon,
• aquiloon,
• yougblood,
• dubbloon,
• dublonn,
• doublone,
• doublooen,
• dobbleoon,
• dubleoon,
• doublouen

• doubling.

The adjective form of the word "doubloon" is "doubloonish". However, it is important to note that "doubloonish" is not a common or widely recognized adjective.

The plural of the "doubloon" can be the "doubloons".

The singular of the "doubloon" can be the "doubloon".