| 1. | 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. |
| 2. | (sometimes lowercase ) a person in quest of something dangerous but rewarding; adventurer. |
| 3. | a person who moved to California during the gold rush of 1849. |
| 4. | (lowercase ) paper nautilus. |