Other forms: argonauts
An argonaut is someone who sets off on daring quest. In The Wizard of Oz, Dorothy and her friends are argonauts in search of a brain, a heart, courage, and home.
The origin of argonaut is an ancient Greek myth about a group of heroes who embarked on a quest to find the sacred Golden Fleece. They were called the Argonauts, or "sailors of the Argo (ship)," from Argo, "the swift," and nautēs, "sailor." If you set off on an adventure in pursuit of a goal, riding your bike for miles to raise money for charity, or scuba diving in lakes seeking sunken treasure, you're an argonaut too.