Argonaut

n.	1.	Any one of the legendary Greek heroes who sailed with Jason, in the Argo, in quest of the Golden Fleece.
	2.	(Zool.) A cephalopod of the genus Argonauta.
	2.	One of those who went to California in search of gold shortly after it was discovered there in 1848. The "Argonauts of '49" were a strong, self-reliant, generous body of men. - D. S. Jordan.

Noun	1.	argonaut - someone engaged in a dangerous but potentially rewarding adventure
	2.	Argonaut - (Greek mythology) one of the heroes who sailed with Jason on the Argo in search of the Golden Fleece
	3.	Argonaut - cephalopod mollusk of warm seas whose females have delicate papery spiral shells Synonyms: Argonauta argo, paper nautilus, nautilus

adventurer, venturer