Any of several species of shelled octopods of the family Argonautidae (of which only the genus Argonauta is not extinct). / An adventurer on a dangerous but rewarding quest.

That can be argued; that can be proven or strongly supported with sound logical deduction, precedent, and evidence. / (colloquial) Open to doubt, argument or debate.

(Greek mythology) One of the members of the Argo who sailed with Jason in search of the Golden Fleece. / Any of several ships and submarines of the British and US navies.

(Greek mythology) The ship in which Jason and the Argonauts sailed on their quest for the Golden Fleece.

Of, from, or pertaining to Argentina or its people.

A citizen or descendant abroad of Argentina. / (dance) Short for Argentine tango.

(archaic, with "the") Argentina. / A neighbourhood of Kansas City, Wyandotte County, Kansas, United States, named after a silver smeltery (see the adjective argentine).

(chiefly geology) pertaining to clay; made of, containing, or resembling clay

A tree (Argania spinosa) of southwestern Morocco, particularly prized for its oil. / The fruit of this tree.

(astronomy): A former constellation of the southern sky, said to represent the mythical ship Argo. In 1763, it was divided into the three new constellations: Carina (keel), Puppis (stern), and Vela (sail).