argonaut
noun
ar·go·naut ˈär-gə-ˌnȯt 
-ˌnät
1
a
capitalized : any of a band of heroes sailing with Jason in quest of the Golden Fleece
b
: an adventurer engaged in a quest
2
: paper nautilus
Example Sentences
Recent Examples on the Web In 1849, several thousand argonauts created a tent city in a South of Market area called Happy Valley. 
Gary Kamiya, SFChronicle.com, 29 May 2020
Gary Kamiya, SFChronicle.com, 29 May 2020 Word History
Etymology
Latin Argonautes, from Greek Argonautēs, from Argō, ship in which the Argonauts sailed + nautēs sailor — more at nautical
First Known Use
14th century, in the meaning defined at sense 1a
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