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

A city in the Peloponnese, Greece. / (Greek mythology) The dog of Odysseus in Homer's Odyssey. / (Greek mythology) Alternative form of Argus (“many-eyed servant of Hera”)

A village and community in Caerphilly county borough, Wales (OS grid ref SO1700). / A community in Flintshire, Wales, with headquarters in Mynydd Isa.

(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).

The chemical element (symbol Ar) with an atomic number of 18. The third most abundant gas in the Earth's atmosphere, it is a colourless, odourless, inert noble gas.

A regional unit in eastern Peloponnese, Greece, which has its modern capital at Nafplio. Its original capital was at Argos.

(now rare) A canton of Switzerland (the Italian name)

A secret language or conventional slang peculiar to thieves, tramps and vagabonds.

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.

(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.