argonaut
Concise Oxford English Dictionary © 2008 Oxford University Press:
argonaut /ˈɑːg(ə)nɔːt/
▶noun Zoology another term for paper nautilus.
– origin from L. argonauta from Gk argonautēs ‘sailor in the ship Argo’ (in which Jason and his companions went in search of the Golden Fleece).
'argonaut' also found in these Oxford entries:

