<p><strong>Noun</strong></p><ul><li>Classical Mythology. a member of the band of men who sailed to Colchis with Jason in the ship Argo in search of the Golden Fleece.</li><li>(sometimes lowercase) a person in quest of something dangerous but rewarding; adventurer.</li><li>a person who moved to California during the gold rush of 1849.</li><li>(lowercase) paper nautilus.</li></ul>